US20110319172A1 - Game system, game management method, and game management program - Google Patents

Game system, game management method, and game management program Download PDF

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Publication number
US20110319172A1
US20110319172A1 US13/138,539 US201013138539A US2011319172A1 US 20110319172 A1 US20110319172 A1 US 20110319172A1 US 201013138539 A US201013138539 A US 201013138539A US 2011319172 A1 US2011319172 A1 US 2011319172A1
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Prior art keywords
players
game
player
fraud
partnering
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Abandoned
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US13/138,539
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English (en)
Inventor
Michiaki Imachi
Yasuyuki Nagatomo
Kazuma Konishi
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Konami Digital Entertainment Co Ltd
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Konami Digital Entertainment Co Ltd
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Assigned to KONAMI DIGITAL ENTERTAINMENT CO., LTD. reassignment KONAMI DIGITAL ENTERTAINMENT CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IMACHI, MICHIAKI, KONISHI, KAZUMA, NAGATOMO, YASUYUKI
Publication of US20110319172A1 publication Critical patent/US20110319172A1/en
Abandoned legal-status Critical Current

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    • A63F13/12—
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
    • A63F13/70—Game security or game management aspects
    • A63F13/75—Enforcing rules, e.g. detecting foul play or generating lists of cheating players
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
    • A63F13/30—Interconnection arrangements between game servers and game devices; Interconnection arrangements between game devices; Interconnection arrangements between game servers
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
    • A63F13/70—Game security or game management aspects
    • A63F13/79—Game security or game management aspects involving player-related data, e.g. identities, accounts, preferences or play histories
    • A63F13/795—Game security or game management aspects involving player-related data, e.g. identities, accounts, preferences or play histories for finding other players; for building a team; for providing a buddy list
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
    • A63F13/70—Game security or game management aspects
    • A63F13/79—Game security or game management aspects involving player-related data, e.g. identities, accounts, preferences or play histories
    • A63F13/798—Game security or game management aspects involving player-related data, e.g. identities, accounts, preferences or play histories for assessing skills or for ranking players, e.g. for generating a hall of fame
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F9/00—Games not otherwise provided for
    • A63F9/20—Dominoes or like games; Mah-Jongg games
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
    • G07F17/32—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for games, toys, sports, or amusements
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
    • G07F17/32—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for games, toys, sports, or amusements
    • G07F17/3225—Data transfer within a gaming system, e.g. data sent between gaming machines and users
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
    • G07F17/32—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for games, toys, sports, or amusements
    • G07F17/3241—Security aspects of a gaming system, e.g. detecting cheating, device integrity, surveillance
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
    • A63F2300/50—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by details of game servers
    • A63F2300/55—Details of game data or player data management
    • A63F2300/5546—Details of game data or player data management using player registration data, e.g. identification, account, preferences, game history
    • A63F2300/556—Player lists, e.g. online players, buddy list, black list
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
    • A63F2300/50—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by details of game servers
    • A63F2300/55—Details of game data or player data management
    • A63F2300/5546—Details of game data or player data management using player registration data, e.g. identification, account, preferences, game history
    • A63F2300/5566—Details of game data or player data management using player registration data, e.g. identification, account, preferences, game history by matching opponents or finding partners to build a team, e.g. by skill level, geographical area, background, play style
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
    • A63F2300/50—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by details of game servers
    • A63F2300/55—Details of game data or player data management
    • A63F2300/5586—Details of game data or player data management for enforcing rights or rules, e.g. to prevent foul play

Definitions

  • the game scores of players that played a game with the game terminal device are being collected in a host via a network, and the nationwide ranking of players is being calculated based on the cumulative game scores of the respective players.
  • the ranking is updated at game end, and is immediately distributed to the game device and displayed on a monitor.
  • the ranking is higher as the game score is higher.
  • the players try to achieve better game scores in order to increase their ranking as much as possible.
  • the opponents are generally decided according to the order of entry.
  • two players make an entry at the same time in collusion, it is likely that they will be allocated to the same table (same game space).
  • the two players advance the mahjong game in collusion with one player playing the role of a winner and the other player playing the role of a loser, it is possible to realize an inappropriate behavior of allowing the player playing the role of a winner to achieve a high score (for example, first place).
  • Such behavior is unrelated to the actual skills of that player, and deceives the remaining legitimate members. Since there will be unjustness in the ranking in relation to the other players, measures need to be taken in order to prevent this kind of fraudulent act.
  • the fraudulent act prevention method described in Patent Document 1 groups the respective entrants so that they will not be in the same team as the players who won a match with the same team in the past for each entry to the game, and thereby eliminates the possibility of fraud opportunities. Accordingly, for example, in a mahjong game, players who were first place and second place or players who were third place and fourth place in a previous game are also prevented from being grouped in the same team in the future, and there is a possibility that the two-player team, which will not necessarily commit fraud, will also be separated with the determination method that only focuses on players who have won against oneself.
  • the present invention was devised in view of the foregoing problems, and its object is to provide a game system, a game management method and a game management program capable of effectively inhibiting fraudulent acts by not allocating collaborators who are suspected of committing fraud to the same game space with an immediate effect, and extracting the suspected fraud player to play the role of the winner and not allocating that player and the suspected fraud collaborator to the same game space with a delayed effect.
  • the present invention is also a game management method of a game server which manages players who play a versus game in a same game space by operating respective game terminals connected to a network, wherein allocation means allocates players, whose entry has been accepted, to the game space according to predetermined rules, log storage means stores, as log information, game scores of the respective players, and other players who have played a versus game in the same game space every time the game ends, fraud determination means performs first fraud determination processing of determining, based on a record of allocation to the same game space of a team of two players who have been allocated to the same game space which is obtained from the log information, whether those two players are suspected fraud players committing joint discard, and registering in a partnering prohibition list the team of the two players when those two players are determined to be suspected fraud players, and second fraud determination processing of determining, based on a record of allocation to the same game space of each player in relation to a plurality of other players which is obtained from the log information, whether that player is a suspected fraud player committing joint discard
  • the present invention is also a game management program of a game server which manages players who play a versus game in a same game space by operating respective game terminals connected to a network, the game management program causing the game server to function as: allocation means for allocating players, whose entry has been accepted, to the game space according to predetermined rules; log storage means for storing, as log information, game scores of the respective players, and other players who have played a versus game in the same game space every time the game ends; fraud determination means for performing first fraud determination processing of determining, based on a record of allocation to the same game space of a team of two players who have been allocated to the same game space which is obtained from the log information, whether those two players are suspected fraud players committing joint discard, and registering in a partnering prohibition list the team of the two players when those two players are determined to be suspected fraud players, and second fraud determination processing of determining, based on a record of allocation to the same game space of each player in relation to a plurality of other players which is obtained from the log information
  • the present invention is also a game system comprising respective game terminals which allow a plurality of players to play a versus game in a same game space via a network, and a game server which is provided on the network and which manages the players who participate in the versus game, wherein the game terminal has acceptance means for accepting entries to the versus game, and wherein either the game terminal or the game server has: allocation means for allocating players, whose entry has been accepted, to the game space according to predetermined rules; log storage means for storing, as log information, game scores of the respective players, and other players who have played a versus game in the same game space every time the game ends; fraud determination means for performing first fraud determination processing of determining, based on a record of allocation to the same game space of a team of two players who have been allocated to the same game space which is obtained from the log information, whether those two players are suspected fraud players committing joint discard, and registering in a partnering prohibition list the team of the two players when those two players are determined to be suspected fraud players, and second fraud
  • the allocation means allocates the player whose entry was accepted to the game space according to predetermined rules. Every time the game ends, the log storage means stores, as log information, game scores of the respective players, and other players who played in the same game space.
  • the fraud determination means performs the first fraud determination processing and the second fraud determination processing. Specifically, first fraud determination processing of determining, based on an allocation record to the same game space of a team of two players who were allocated to the same game space which is obtained from the log information, whether those two players are suspected fraud players committing joint discard, and registering the team of the two players in a partnering prohibition list when those two players are determined to be suspected fraud players is performed.
  • the collaborators who are suspected of committing fraud in a game are not allocated to the same game space based on the first fraud determination processing with an immediate effect, and the suspected fraud player to play the role of the winner is extracted and that player and the suspected fraud collaborator are not allocated to the same game space based on the second fraud determination processing with a delayed effect, and fraudulent acts are thereby inhibited effectively.
  • a joint discard is a fraudulent game operation where two players are allocated to the same table and one player plays the role of a loser to allow the other player to win the game.
  • the rules for allocation in addition to first come, first served, various methods can be adopted such as giving consideration to differences in attributes, the rules need to at least be related to the acts of the player in relation to the allocation to the same game space.
  • first served this refers to the act of simultaneously accepting entries.
  • differences in attributes this refers to the act of falsifying data in advance for causing the attributes to coincide.
  • an allocation record is a record that gives consideration to the number of times or frequency that the players were allocated to the same game space.
  • the collaborators who are suspected of committing fraud in a game are not allocated to the same game space with an immediate effect, and the suspected fraud player to play the role of the winner is extracted and that player and the suspected fraud collaborator are not allocated to the same game space with a delayed effect, and fraudulent acts are thereby inhibited effectively.
  • FIG. 1 is a configuration diagram showing an embodiment of the game system according to the present invention.
  • FIG. 3 is a hardware configuration diagram showing one embodiment of the game terminal device.
  • FIG. 4 is a functional configuration diagram of the control unit of the game terminal device.
  • FIG. 5 is a hardware configuration diagram showing one embodiment of the server device.
  • FIG. 7 is an example of the screen view of the mahjong game match screen.
  • FIG. 8 is a flowchart explaining the mahjong game progress processing to be executed by the CPU 361 of the server device 3 , and is a flowchart showing the processing in the case of receiving a signal from the game terminal device 1 .
  • FIG. 9 is a flowchart showing the processing in the case where the received signal was an acceptance signal.
  • FIG. 11 is a flowchart showing the suspected fraud player extraction processing to be executed every predetermined short period (one day).
  • FIG. 12 is a flowchart showing the allocation processing.
  • FIG. 13 is a flowchart showing the allocation processing.
  • FIG. 14 is a flowchart showing the short-term fraud countermeasure processing.
  • FIG. 15 is a flowchart showing the long-term fraud countermeasure processing.
  • FIG. 16 is a flowchart showing the long-term fraud countermeasure processing.
  • FIG. 17 is a flowchart showing the long-term fraud countermeasure processing.
  • FIG. 18 is a flowchart showing the long-term fraud countermeasure processing.
  • FIG. 1 is a configuration diagram showing an embodiment of the game system according to the present invention.
  • the game system comprises game terminal devices 1 respectively associated with identification information, a router 2 serving as a communication device which is communicably connected to the plurality of (eight in this example) game terminal devices 1 , which performs the relay and communication among the game terminal devices 1 , and which connects the respective game terminal devices 1 and game terminal devices of other stores via a network (for example, the internet), and a server device 3 communicably connected via the respective routers 2 and which manages information concerning player authentication for a plurality of players to play a game via the game terminal devices 1 , selection of player grouping, game scores of the respective players, and ranking of all players.
  • the respective game terminal devices 1 and the router 2 are connected via a LAN (Local Area Network) cable.
  • LAN Local Area Network
  • the game terminal device 1 comprises a power switch not shown at an appropriate location on its case (for example, on the back face of the case), and is activated by the power being turned ON.
  • the game terminal device 1 is used for advancing the game by receiving game play operations from a player who is playing the game while viewing a game image displayed on a monitor.
  • the identification information that is associated with the game terminal device 1 includes identification information of each router 2 to which the game terminal devices 1 are connected (or identification information of the store where the game terminal devices 1 are installed) and identification information of each game terminal device 1 in the store where the game terminal devices 1 are installed. For example, when the identification information of store A is A and the identification information of the game terminal device 1 in store A is 4, the identification information of that game terminal device 1 is A4.
  • the router 2 is communicably connected to each of the plurality of game terminal devices 1 and the server device 3 , and transfers data between the game terminal devices 1 and the server device 3 .
  • the server device 3 is communicably connected to the respective routers 2 , stores information such as the player information by associating it with the user ID as unique information (identification information) for identifying the individual players, and also manages information concerning players (opponents) that are playing the game in the same game place as the player by sending and receiving data to and from the respective game terminal devices 1 via the router 2 through use of the identification information of the game terminal devices 1 .
  • FIG. 2 is a perspective view showing the exterior of one embodiment of the game terminal device 1 .
  • the game that is played using the game terminal device 1 may be a personal game or a versus game.
  • This embodiment is assuming a mahjong game (refer to FIG. 7 ), and the player operating the game terminal device 1 and the players operating the other game terminal devices 1 will play a match.
  • operational data according to the operations of the respective players is transferred among the game terminal devices 1 , which are being used for playing the match, via a network communication unit 18 described later and the router 2 .
  • the game terminal device 1 comprises a monitor 11 for displaying a game screen, a touch panel 11 a laminated on the monitor 11 and which senses the pressing force of the player and determines which button has been pushed based on the address of the button that urges the player to select the options displayed on the game screen of the monitor 11 and the position that was pressed by the player, a speaker 12 for outputting sound, a card reader 13 for reading information such as the user ID that is stored in a personal card, and a coin acceptance unit 14 for accepting the coins that were inserted by the player.
  • the monitor 11 displays a game screen, and is configured from a liquid crystal display, a plasma display or the like.
  • a personal card is a recording medium such as a magnetic card or an IC card which stores personal information such as the user ID.
  • a conventional card reader 13 has been adopted to read the recorded data in a state where the personal card has been inserted into the reading slot not shown, maintain the inserted state while the game is ongoing, and allow the removal of the card with removal means not shown when the game is ended and instructions for removing the card are received from the player.
  • the personal card is configured to enable close range communication via radio waves or infrared
  • a reception element capable of sensing radio waves and infrared is adopted as the card loader 13 .
  • it may also be configured to enable bidirectional communication of required information as needed.
  • a control unit 16 (refer to FIG. 3 ) configured from a microcomputer which outputs detected signals from the respective units or control signals to the respective units is disposed at an appropriate location of the game terminal device 1 .
  • FIG. 3 is a hardware configuration diagram showing one embodiment of the game terminal device 1 .
  • the control unit 16 controls the overall operation of the game terminal device 1 , and comprises an information processing unit (CPU) 161 which performs various types of information processing including acceptance processing, processing concerning the overall progress of the game, image display processing and so on, a RAM 162 for temporarily storing information in the midst of being processed, and a ROM 163 which stores in advance predetermined image information including the game screen, various types of setting information, game programs, and the like.
  • CPU information processing unit
  • An external I/O control unit 171 converts detected signals into digital signals for processing between the control unit 16 and the detection units including the card reader 13 , the touch panel 11 a (operation unit) and the coin acceptance unit 14 , and converts the command information into control signals of the respective devices of the detection units, and outputs such signals.
  • the external I/O control unit 171 performs the foregoing signal processing and I/O processing, for example, based on time division.
  • the external device control unit 172 performs the output operation of control signals to the respective devices of the detection units and the input operation of detected signals from the respective devices of the detection units within their respective time division periods.
  • a graphic (image drawing) processing unit 111 displays a required screen on the monitor 11 according to the image display command from the control unit 16 , and comprises a video RAM and the like.
  • a sound reproduction unit 121 outputs, from the speaker 12 , a predetermined message, BGM or the like according to a command from the control unit 16 .
  • the ROM 163 stores various screens in addition tile objects, a table screen, a game screen for the respective buttons, a game entry screen and the like.
  • the tile objects are configured from a required number of polygons so that they can be rendered three-dimensionally
  • the graphic processing unit 111 performs calculation and light source calculation processing for converting the position in the three-dimensional space to a position in a simulated three-dimensional space based on a graphic command from the CPU 161 , and further performs write processing of image data to be rendered to the video RAM based on the foregoing calculation results; for example, write (paste) processing of texture data to an area of the video RAM that is designated by the polygons.
  • the CPU 161 reads, from the ROM 163 , the image, sound and control program data and game program data based on the operating system (OS) that is recorded in the ROM 163 that can be detachably mounted on a built-in or external image display processing unit for outputting and displaying image information to and on the monitor 11 .
  • OS operating system
  • a part or all of the read image, sound and control program data are retained in the RAM 162 .
  • the CPU 161 performs processing based on the control program and various data (image data and sound data including polygons and textures of objects to be displayed and other text images) stored in the RAM 162 , as well as the detected signals from the detection units.
  • Data that can be stored in a removable recording medium among the various types of data stored in the ROM 163 may also be readable with drivers of, for example, a hard disk drive, an optical disk drive, a flexible disk drive, a silicon disk drive, a cassette medium reader or the like.
  • the recording medium is, for example, a hard disk, an optical disk, a flexible disk, a CD, a DVD, a semiconductor memory or the like.
  • the network communication unit 18 sends and receives the player's operational information which arises during the execution of the mahjong game to and from the game terminal devices 1 , which are being used to play the match, via the router 2 and additionally via the network.
  • the network communication unit 18 also sends and receives to and from the server 3 information required for the personal authentication during the entry processing of a new player, before and after the execution of the game, and game scores at the end of the game via the router 2 .
  • FIG. 4 is a functional configuration diagram of the control unit 16 of the game terminal device 1 .
  • the CPU 161 of the control unit 16 functions as an acceptance processing unit 161 a which accepts entries to the game from players, a game progress control unit 161 b which controls the sequential progress of the mahjong game from the start to end of the game, an image display processing unit 161 c which displays an entry image, game image, game end image, ranking display image and the like on the monitor 11 , a score processing unit 161 d which decides the game score (value of points of point sticks on hand) and ranking at the end of the game by evaluating the player's operation during the game, a dan grade setting unit 161 e which sets a dan grade as an attribute representing the strength level of that player in the game based on the number of items that are virtually held by that player, a title setting unit 161 f which calculates the parameter representing that player's characteristics in the game based on the history data stored
  • the acceptance processing unit 161 a reads the user ID from the personal card that was inserted into the card reader 13 of the game terminal device 1 after the touch panel 11 a detects that the entry button or the like not shown displayed on the monitor 11 has been pressed by the player wishing to enter the game.
  • the game progress control unit 161 b allows four players to play a mahjong game as shown in the game screen of FIG. 7 , and the order of tsumo (drawing the last tile needed to complete a hand) among the players is repeated in a predetermined order. Moreover, the game progress control unit 161 b allows a player to discard one of its tiles in hand, within a predetermined time, for each occurrence of tsumo. Accordingly, the player will think of which tile should be discarded for each occurrence of tsumo, and perform an operation for designating the decided tile; that is, perform an operation of pressing the display position of the corresponding tile object.
  • the communication control unit 161 g sends this operational information to the other game terminal devices 1 of the (same virtual table; that is, same game space) playing the match, and the contents of the screen of the game terminal devices 1 of oneself and other players are updated, and tsumo will occur in the game terminal device 1 to play the next hand.
  • the title setting unit 161 f virtually awards a title to the player in the game based on the calculated parameters when that player is promoted to the first dan grade in the decision of dan grades performed by the dan grade setting unit 161 e .
  • the parameters include, for example, conventional winning rate, payment rate, average dora count and average han count.
  • the title awarding unit 161 f sets the parameters by referring to the levels of the winning rate, payment rate, average dora count and average han count, and awards the title corresponding to the highest parameter.
  • the level of the winning rate is the highest, it is determined that the player a hit-and-run type player and is awarded the title of “Vermillion Bird.” If the level of the payment rate is the highest, it is determined that the player is a defensive player and is awarded the title of “Black Tortoise.” If the level of the average dora count is the highest, it is determined that the player depends on luck and is awarded the title of “Azure Dragon.” If the level of the average han count is the highest, it is determined that the player is an offensive player and is awarded the title of “White Tiger.”
  • the respective titles represent the character names that show the type of playing (for example, hit-and-run) that is carried out by that player.
  • FIG. 5 is a hardware configuration diagram showing one embodiment of the server device 3 .
  • the control unit 36 controls the overall operation of the server device 3 , and comprises an information processing unit (CPU) 361 , a RAM 362 for temporarily storing personal information of the respective players, game score information of the respective players, and fraud information of the respective players, and a ROM 363 which stores in advance predetermined image information for management, management programs, ranking processing programs and the like.
  • CPU information processing unit
  • RAM 362 for temporarily storing personal information of the respective players, game score information of the respective players, and fraud information of the respective players
  • ROM 363 which stores in advance predetermined image information for management, management programs, ranking processing programs and the like.
  • Data that can be stored in a removable recording medium among the various types of data stored in the ROM 363 may also be readable with drivers of, for example, a hard disk drive, an optical disk drive, a flexible disk drive, a silicon disk drive, a cassette medium reader or the like.
  • the recording medium is, for example, a hard disk, an optical disk, a flexible disk, a CD, a DVD, a semiconductor memory or the like.
  • the network communication unit 38 sends and receives various types of information and data to and from the corresponding game terminal devices 1 according to the terminal identification information through one among the plurality of routers 2 via a network configured from WWW or the like.
  • management programs are recorded in the ROM 363 , and the respective functions are realized by the management programs being loaded into the RAM 362 and such management programs in the RAM 362 being sequentially executed by the CPU 361 .
  • the fraud determination unit 3613 comprises a log acquisition processing unit 3614 , a short-term fraud countermeasure processing unit 3615 , and a long-term fraud countermeasure processing unit 3616 .
  • the CPU 361 comprises an internal timer (clock means) that is generated by conventional software.
  • the partnering history information storage unit 3625 stores information of a short period; for instance, for one day, concerning all two-player team (A and B) that played a match at the same table, and information of the partnering count corresponding to the team of reference ID (A) and reference ID (B).
  • the log acquisition processing unit 3614 reads the log information stored in the RAM 362 as needed and uses it for the fraud determination processing.
  • the short-term fraud countermeasure processing unit 3615 monitors the two-player team from the log information of a versus game during a short period; for example, during one day, and determines whether that team needs to be registered in a partnering prohibition list from the partnering conditions.
  • the allocation unit 3612 decides the table of the player; that is, decides the grouping with the other opponent players (step S 11 ).
  • the required information such as the player information and log information of the four players included in the grouping is sent, together with a game start command signal, to the respective game terminal devices 1 to play the mahjong game at the same table (step S 13 ).
  • an internal timer or the like is referred to in order to determine whether a predetermined period (for example, one day) has elapsed (step S 31 ), and the flow is ended if such predetermined period has lapsed. If it is determined that the predetermined period has not lapsed, the short-term fraud countermeasure processing (step S 33 ) and the long-term fraud countermeasure processing (step S 35 ) are performed, and the flow is ended.
  • a predetermined period for example, one day
  • step S 41 the reference ID and the attribute information such as the dan grade and title as information of the game entrant player, and the score of the last game are received (step S 41 ). Subsequently, whether there is a table in waiting is determined (step S 43 ). If there is no table in waiting, a new table is created, information of that player is registered in, or allocated to, that table (step S 45 ), and the routine returns to step S 41 .
  • This comparison processing is the determination processing for preventing joint discard, as much as possible, by referring to the scores of the last games of the two players regardless of whether they were playing a match at the same table in the last game. This is performed, for example, as follows. A winning role threshold WP and a losing role threshold LP are let in advance.
  • step S 47 it is determined as appropriate (Yes in step S 47 ), and determined as inappropriate if not (No in step S 47 ). If the result is inappropriate, allocation of the player to that table is restricted, moved to the next table, and appropriate is determined (step S 49 to step S 43 ). Note that this may also be determined based on the existence of a relationship of first place and fourth place in substitute for the high or low of scores.
  • step S 51 whether the grouping of the respective members of that table is registered in the partnering prohibition list is determined. This determination is the determination processing of preventing joint discharge by referring to the partnering record based on the partnering count or frequency of the two-player team. This is performed, for example, as follows.
  • step S 55 whether the head-count limit of players to be allocated to the table (four people in this embodiment) has been reached or whether the cut-off time has been reached is determined.
  • the routine returns to step S 41 . Note that the determination may be affirmed upon reaching the head-count limit.
  • step S 73 whether there is partnering history information regarding the grouping of the two-player team is determined. If there is no partnering history information, the routine exits this flow. Meanwhile, if there is partnering history information, whether the partnering count of the team of the reference ID (A) and the reference ID (B) exceeds a threshold N is determined (step S 75 ). The value N is the threshold for determining joint discard. If the partnering count of the team of the reference ID (A) and the reference ID (B) exceeds the threshold N, that team is registered in the partnering prohibition list (step S 77 ).
  • step S 77 the routine skips step S 77 and proceeds to step S 79 .
  • step S 79 the partnering history information of the next team is read, and routine returns to step S 73 , and the monitoring of all partnering history information is performed.
  • step S 93 the partnering frequency information is rewritten. Specifically, the frequency parameter is updated to partnering count+Pb, and the total partnering count is updated to the partnering count. Note that the value Pb is a frequency parameter penalty value capable of determining joint discard.
  • the partnering frequency information of the next row is thereafter read (step S 95 ), and the routine returns to step S 87 .
  • step S 87 the partnering frequency information in which the frequency parameter value is 0 or less is deleted among the partnering frequency information.
  • the partnering frequency information is read from the first row (step S 99 ). Then, the existence of the partnering frequency information is determined (step S 101 ). If there is partnering frequency information, whether the frequency parameter value of the partnering frequency information is greater than A1 is determined (step S 103 ). The value A1 is a determination threshold for determining the existence of joint discard. If the frequency parameter value of the partnering frequency information is greater than A1, this partnering frequency information is added to the joint discard processing list (step S 103 ). The partnering frequency information of the next row is thereafter read (step S 107 ), and the routine returns to step S 101 .
  • step S 105 the routine skips step S 105 and proceeds to step S 107 .
  • step S 101 the joint discard processing list is read from the first row (step S 109 ), and the existence of the joint discard processing list is determined (step S 111 ). If there is a joint discard processing list, whether the reference ID (A) is registered in the player list is subsequently determined from the joint discard processing list (step S 113 ). If the reference ID (A) is registered in the player list, information of the reference ID (A) of the player list is rewritten (step S 115 ), and the routine proceeds to step S 119 . For the rewriting of the reference ID (A) of the player list, the frequency parameter of the joint discard processing list is written into the frequency parameter total column.
  • step S 119 whether the reference ID (B) is registered in the player list is subsequently determined. If the reference ID (B) is registered in the player list, information of the reference ID (B) of the player list is rewritten (step S 121 ), and the routine proceeds to step S 125 .
  • the frequency parameter of the joint discard processing list is written into the frequency parameter total column.
  • the reference ID (B) is not registered in the player list, the player of the reference ID (B) is newly registered in the player list, and the frequency parameter of the joint discard processing list is written into the frequency parameter total column of the reference ID (B) of the newly registered player list (step S 123 ), and the routine proceeds to step S 125 .
  • step S 125 the joint discard processing list of the next row is read, and the routine returns to step S 111 .
  • step S 111 if there is no joint discard processing list, the player list is read from the first row (step S 127 ), and the existence of the player list is determined (step S 129 ). If there is a player list, whether the frequency parameter total of that player list is greater than A2 is determined (step S 131 ).
  • the value A2 is the determination threshold capable of acknowledging that a certain player is playing the role of a winner as the main culprit of the fraudulent joint discard.
  • the partnering count of the partnering history information and the frequency parameter of the partnering frequency information were calculated only based on partnering/non-partnering, but alternately, weighting may be added according to the cases where the ranking of the reference ID (A) and the reference ID (B) is first place and fourth place, first place and third place, and first place and second place in order to more accurately determine the possibility of joint discard.
  • a case of second place and fourth place can also be included. In other words, it is possible to include a level where one player can be acknowledged as playing the role of a winner and the other player can be acknowledged as playing the role of a loser.
  • the allocation unit 3612 , the log acquisition processing unit 3614 , the fraud determination unit 3613 , and the restriction unit 3617 were provided to the server device 3 , but it is also possible to provide a part or all of such units to the game terminal device 1 .
  • the present invention is a game system comprising respective game terminals which allow a plurality of players to play a versus game in a same game space via a network, and a game server which is provided on the network and which manages the players who participate in the versus game, wherein the game terminal has acceptance means for accepting entries to the versus game, and the game server has: allocation means for allocating players, whose entry has been accepted, to the game space according to predetermined rules;
  • log storage means for storing, as log information, game scores of the respective players, and other players who played a versus game in a same game space every time the game ends; fraud determination means for performing first fraud determination processing of determining, based on a record of allocation to the same game space of a team of two players who have been allocated to the same game space which is obtained from the log information, whether those two players are suspected fraud players committing joint discard, and registering in a partnering prohibition list the team of the two players when those two players are determined to be suspected fraud players, and second fraud determination processing of determining, based on a record of allocation to the same game space of each player in relation to a plurality of other players which is obtained from the log information, whether that player is a suspected fraud player committing joint discard, and registering in the partnering prohibition list teams of that fraud player and each of the other players allocated to the same game space when that player is determined to be a suspected fraud player; and restriction means for restricting the allocation of two players to the same game space when those two players whose entries to the versus
  • the acceptance means comprises a reading unit for reading identification information on a player from a recording medium recorded with the identification information on that player.
  • the allocation means allocates a predetermined number of players to the same game space according to the order of entry acceptance. According to the foregoing configuration, the fraud entrants who engage in simultaneous entry can be effectively allocated to different game spaces.
  • the first fraud determination processing determines a team of two players to be suspected fraud players when the number of times that the two players have been allocated to the same game space during a predetermined period exceeds a predetermined threshold.
  • a predetermined threshold a situation where the number of times that players are allocated to the same game space is probabilistically impossible (numerous) during a predetermined period, during one day for instance, when determined according to the total number of players, the two-player fraud team that will engage in joint discard can be extracted more quickly.
  • the second fraud determination processing determines a team of players to be suspected fraud players when an allocation frequency according to the record of allocation of a certain player and the plurality of other players to the same game space exceeds a predetermined threshold. According to the foregoing configuration, by monitoring the allocation record of a certain player with the other plurality of players, even in cases where one player is impersonating the other plurality of players, the two-player fraud team that will engage in joint discard can be extracted effectively.
  • the restriction means restricts the allocation of two players to the same game space upon determining that a win/loss record of the last versus game of each of those two players whose entries to the versus game have been accepted shows that one of those players was a winner and the other one of those players was a loser.
  • the win/loss record of the last match of both players was one player playing the role of a winner and the other player playing the role of a loser regardless of whether it was the same game space, both players are not allocated to the same game space.
  • the fraud determination means reads the log information daily and updates registration information of the partnering prohibition list. According to the foregoing configuration, the restriction processing can be performed easily since the team of fraud players is ultimately extracted, in an updated manner, only based on the partnering prohibition list.

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