KR101305929B1 - Method and server for providing a item reuse service - Google Patents

Abstract

PURPOSE: A method for providing an item reuse service in an online game and a server thereof are provided to increase the game participation of a user by exchanging items obtained and possessed through the online game to new or higher items. CONSTITUTION: A game operating server provides a reuse page for reusing items possessed by a user terminal to the user terminal (S11). The server receives input related to the number of the items possessed by the user terminal from the user terminal (S12). The server determines a probability and a range of grades of items to be possessed through the reuse of the items according to the total sum of grades of the inputted items (S13). The server provides a preset number of user interfaces for selecting reusable items to the user terminal (S14). [Reference numerals] (S11) Game operating server provides a reuse page for reusing items possessed by a user terminal to the user terminal; (S12) Server receives input related to the number of the items possessed by the user terminal from the user terminal; (S13) Server determines a probability and a range of grades of items to be possessed through the reuse of the items according to the total sum of grades of the inputted items; (S14) Server provides a preset number of user interfaces for selecting reusable items to the user terminal based on the probability and the range of grades of the determined item

Description

Method and server for providing item reuse service in online game

The present invention relates to a method and a server for providing an item reuse service in an online game that can exchange an item acquired and held through an online game with a new or higher item.

Recently, with the development of network technology and content technology, the number of users using online games is increasing rapidly. As the utilization rate of online games has increased, various gameplays have become possible through competition and cooperation among users. Accordingly, online games have become contents that can build social networks beyond simple games.

Generally, paid or free online games on the Internet are provided in a wide variety of genres, such as simulation games, role-playing games, mug games, and shooting games.In the course of the game, gamers remove objects or items In addition, scores, levels, experience points, and the like are accumulated.

The technical problem to be solved by the present invention is to provide a method and server for providing an item reuse service in the online game that can exchange the items obtained and retained through the online game with new or higher items.

According to an embodiment of the present invention, a method for providing an item reuse service in an online game includes: providing, by a game operation server, a reuse page for reusing an item held by a user terminal to the user terminal; Receiving an input about the number of items held by the user terminal for item reuse from the user terminal; Determining a range and probability of a grade of an item that the user terminal can obtain through item reuse according to the sum of the grades of the received items; And providing the user terminal with a user interface through which the user terminal can select a reuse item based on the determined range and probability of the item's rating.

The user interface may be a selection interface that selects a number corresponding to the number of items held by the user terminal for item reuse from the user terminal.

The providing of the user interface to the user terminal may include providing the user interface with a selection interface including a predetermined number of reuse items.

In addition, after the step of providing the user interface to the user terminal, upon receiving an input for item selection for reuse from the user terminal, displaying the number of selections subtracted the number of items that the user terminal can select It characterized in that it further comprises.

The displaying may include displaying the remaining number of selections after subtracting the predetermined number when receiving an input regarding selection of an item for reuse from the user terminal.

The method may further include initializing the selection interface and providing a selection interface for initializing the total selection number when the remaining number of selections is less than or equal to a predetermined number.

The providing of the user interface to the user terminal may include providing a selection interface including the predetermined number of reuse items to a plurality of other user terminals that want to reuse an item in addition to the user terminal. do.

In addition, after the step of providing the selection interface, upon receipt of an input regarding item selection for reuse from the plurality of user terminals, the game money of each of the plurality of user terminals is subtracted, and the determined level of the reuse item is determined. And displaying the reuse item selected according to the probability.

The server for providing an item reuse service in an online game according to an embodiment of the present invention provides a reuse page for reusing an item held by a user terminal to the user terminal, and an item held by the user terminal for item reuse from the user terminal. A reuse item management module for receiving an input regarding the number of pieces; A range and probability determination module for determining a range and probability of a grade of an item that the user terminal can obtain through item reuse according to the sum of the grades of the received items; And a reuse selection interface providing module for providing the user terminal with a user interface through which the user terminal can select a reuse item based on the determined range and probability of the grade of the item.

The user interface may be a selection interface that selects a number corresponding to the number of items held by the user terminal for item reuse from the user terminal.

In addition, the reuse selection interface providing module is characterized by providing a selection interface including a predetermined number of reuse items to the user terminal.

The reuse selection interface providing module may provide a selection interface including the predetermined number of reuse items to a plurality of other user terminals that want to reuse an item in addition to the user terminal.

The range and probability determination module may determine a grade and a probability of the reuse item selected by the plurality of user terminals.

As described above, according to the present invention, it is possible to increase the user's participation in the game by allowing an item acquired and held through an online game to be exchanged for a new or higher item.

1 is a flowchart illustrating a method of providing an item reuse service in an online game according to an embodiment of the present invention.
2 is a flowchart illustrating a method of providing an item reuse service in an online game according to another embodiment of the present invention.
3 is a flowchart illustrating a method of providing an item reuse service in an online game according to another embodiment of the present invention.
4 is a flowchart illustrating a method of providing an item reuse service in an online game according to another embodiment of the present invention.
5 is a flowchart illustrating a method of providing an item reuse service in an online game according to another embodiment of the present invention.
6 to 9 are exemplary diagrams showing an example displayed on the screen of the user terminal according to the implementation of each embodiment of the present invention.
10 is a schematic diagram of an item reuse service providing server in an online game according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described for the item payment method and server according to the event participation in the online game according to each embodiment of the present invention.

In the following description, in order to clarify the understanding of the present invention, description of well-known technology for the features of the present invention will be omitted. The following embodiments are detailed description to help understand the present invention, and it should be understood that the present invention is not intended to limit the scope of the present invention. Therefore, equivalent inventions that perform the same functions as the present invention will also fall within the scope of the present invention.

In the following description, the same reference numerals denote the same components, and unnecessary redundant explanations and descriptions of known technologies will be omitted.

In the embodiments of the present invention, " communication ", " communication network ", and " network " The three terms refer to wired and wireless local area and wide area data transmission and reception networks capable of transmitting and receiving a file between a user terminal, a terminal of another user, and a download server.

In the following description, a "game server" refers to a server computer to which users access to use game contents. In the case of a game having a small capacity or a small number of users, a plurality of game programs can be operated in one game server. In addition, in the case of a game having a very large capacity or a large number of real-time connections, there may be one or more game servers for operating one game depending on the functions of the game.

In addition, middleware for the database and servers performing payment processing can be connected to the game server, but a description thereof will be omitted in the present invention.

In the present invention, the online game means game content that can be used by users by accessing the above-mentioned game server. Particularly, it means a game in which a plurality of users can simultaneously access and enjoy the game, and the level is raised through an act of acquiring experience while fostering a character by advancing a game. In addition, in order to facilitate the progress of the game on the game, it means a game that can purchase a variety of items.

In the online game of the present invention, various community systems can be used. For example, a guild of an online game, or a clan may be formed. The above concept means that users who use online games gather to form a group and organize a group. Depending on the number of users or the level of the characters of the users, each group can have a high reputation of a guild or a clan, so that various benefits within the game can be utilized. For example, if the guild or clan's reputation increases, the character's display on the game screen may change (e.g. the effect of changing the color of the displayed character's name), or to use items and villages in the game. You can enjoy the benefits of

In addition, a community system that can be used in online games is party play. The party play is a group in game play through requests, invitations, and acceptances among users, and the formed party members may use their own chat system, or a specific display for identifying party members on the game screen.

In addition, users who perform party play may distribute items to each other or share the result content obtained as a result of game play. The sharing method may also be set by each having a result content, or distributing at least a part of the result content to other characters.

In the present invention, the result content refers to all content that can be obtained by the characters of the play result users during the game play. For example, in the case of a shooting game, the experience content and cyber money that can be obtained at the end of a game may belong to the result content, and in the case of a sports game, the experience content and cyber money that can be obtained at the end of a game, etc. Can be In the case of role-playing games, the result content may be the experience gained from completing a specific quest or killing a monster, and reward cyber money.

In the online game, when the user's character acquires a specific result content, the resultant content belongs to all of the user's character. However, when belonging to a party play or a guild, a clan, or the like, at least a part of the obtained content may be distributed to characters of other users belonging to the party, the guild, the clan, and the like.

An item here refers to all the data that can help the progress of the game and can be understood as an item in a game in general. For example, in a role-playing game, an item that allows a character to substitute for a user to obtain more experience value obtained when a monster is suppressed, an item that can change the appearance of a character, etc. correspond to an item can do.

1 is a flowchart illustrating a method of providing an item reuse service in an online game according to an embodiment of the present invention.

Referring to FIG. 1, the game operation server provides a reuse page for reusing an item held by a user terminal to the user terminal (S11). Here, the reuse of the item means to obtain a new or higher item among the items possessed or acquired by the user, and the game operation server provides a reuse page through which the user can reuse the item. In the reuse page, the user can select an item he wants to reuse, and if it reuses, the user can obtain a new item.

The user terminal receives the number of items held by the user terminal for item reuse (S12). That is, the user can directly enter the range of items that he wants to reuse.

According to the sum of the grades of the received items, the user terminal determines the range and probability of the grade of the item that can be obtained through item reuse (S13). The range and probability of items that a user can receive is determined according to the sum of the grades of each item input by the user. For example, if a user enters a total of three items on the reuse page, and enters one class 1 item, one class 2 item, and one class 1 item, the points correspond to each class. Multiply the number by and divide by the number of cards entered based on the value determines the probability that the user can receive from the highest grade to the lowest grade.

In operation S14, the user terminal may provide a user interface through which the user terminal may select a reuse item based on the determined range and probability of the grade of the item. Provided to the user is a user interface in which the number of reuse items can be selected based on a predetermined probability. Here, the user interface may be a selection interface for selecting n items when the user inputs n + 1 items. In addition, the selection interface may be an interface that allows a large number of selections so that a plurality of users who want to use the reuse page may select with a probability and a range determined for each user. For example, it may provide a selection interface for selecting a total of 500, and may be a number of selection interfaces that can be sufficiently selected by all users who want to participate, such as 10 determined by User A and 20 determined by User B. The selection interface is displayed to all users. Referring to FIG. 6, a selection interface 600 for selecting a total of 500 is shown. In addition, a menu 610 indicating the total number of possible selections and a menu 620 indicating the remaining number of selections of the corresponding user terminal are illustrated.

2 is a flowchart illustrating a method of providing an item reuse service in an online game according to another embodiment of the present invention.

Referring to FIG. 2, the game operation server provides the user terminal with a reuse page for reusing an item held by the user terminal (S21).

The user terminal receives n + 1 items held by the user terminal for item reuse (S22).

According to the sum of the grades of the received items, the user terminal determines the range and probability of the grade of the item that can be obtained through item reuse (S23).

The user terminal may provide the user terminal with which the user terminal may select n reuse items based on the determined range and probability of the grade of the item (S24). As illustrated in FIG. 6, a user who inputs n + 1 items may determine a range and probability of the grades according to the sum of the grades of the respective items, and select n reuse items.

3 is a flowchart illustrating a method of providing an item reuse service in an online game according to another embodiment of the present invention.

Referring to FIG. 3, the game operation server provides the user terminal with a reuse page for reusing an item held by the user terminal (S31).

The user terminal receives n + 1 items held by the user terminal for item reuse (S32).

According to the sum of the grades of the received items, the user terminal determines the range and probability of the grade of the item that can be obtained through item reuse (S33).

The selection interface including a predetermined number of reuse items is provided to the user terminal based on the determined range and probability of the grade of the item (S34). Here, the predetermined number is more than n numbers that can be selected by the user terminal, and is a number that can be selected by a plurality of users.

When the reuse item is selected from the user terminal (S35), the reuse item selected according to the grade and probability determined in S33 is displayed (S36). The remaining number of selections of the user terminal, that is, n-1 and the total number of remaining numbers of the selection interface, that is, a predetermined number of 1s, are displayed (S37). Referring to FIG. 7, when the user selects selection 4, the reuse item 1 701 is displayed, the total number of selectable items is reduced to 499, and the number of remaining selections of the corresponding user terminal is also reduced to n-1. In addition, the selection interface 700 is shown together to all users participating in the reuse selection in the reuse page, it is possible to select the reuse item according to the range and probability of the grade of the determined item of each user. In addition, as shown in FIG. 8, when the user terminal selects selection 2, the reuse item 2 is displayed, and the total number of selectable items is 498, and the remaining number of selections of the corresponding user terminal is reduced to n-2.

4 is a flowchart illustrating a method of providing an item reuse service in an online game according to another embodiment of the present invention.

Referring to FIG. 4, a selection interface including a reuse item is provided to all user terminals participating in reuse (S41).

The selection interface is provided to each user terminal based on the grade and probability of the determined reuse item of each user terminal (S42).

When the reused item is selected from the user terminal (S43), the game money of the corresponding user terminal is subtracted and the reused item selected according to the determined grade and probability of the reused item of the corresponding user terminal is displayed (S44).

The number of selections of the corresponding user terminal is subtracted (S45), and the number of total selectable reuse items is subtracted (S46).

5 is a flowchart illustrating a method of providing an item reuse service in an online game according to another embodiment of the present invention.

Referring to FIG. 5, a selection interface including a reuse item is provided to all user terminals participating in reuse (S51).

In operation S52, a selection interface is provided to each user terminal based on the grade and the probability of the determined reuse item of each user terminal. Here, the number of participating user terminals may allow only 70% of users to participate in the total number of selection interfaces provided. For example, when providing 500 selection interfaces, only 350 users can participate.

When a reuse item is selected from the user terminal (S53), the number of selectable reuse items is subtracted (S54).

If the number of remaining reused items is greater than or equal to a certain number (S55), the process returns to S53. If the number of selected reuse items is smaller than a certain number, the selection interface is initialized and the total number of selections is initialized (S56). For example, if there are less than 350, which is 70% of the total, in the selection interface for selecting 500, it may be initialized to 500 again so that a new reuse item may be selected. However, the number of selection of the corresponding user terminal which has already been selected is maintained. Here, although the total number of selections and the number of initializations have been described, of course, it is not limited thereto. Referring to FIG. 9, the entire selection interface 900 is re-initialized and the total number of selectable numbers is initialized to 500, but the remaining number of selections of the user terminal that has already selected is maintained at n-2.

10 is a schematic diagram of an item reuse service providing server in an online game according to another embodiment of the present invention.

Referring to FIG. 10, the game operations server 1000 includes a reuse item management module 1001, a range and probability determination module 1002, and a reuse selection interface module 1003, and further includes a user database 1004. It may include. Here, the game operation server 1000 should be understood to have the same meaning as the item reuse service providing server in the online game used in the claims.

The reuse item management module 1001 provides a reuse page for reusing an item held by the user terminal 1020 to the user terminal 1020, and uses the user terminal 1020 to reuse an item from the user terminal 1020. Enter the number of items you have.

The range and probability determination module 1002 determines the range and probability of the grade of the item that the user terminal 1020 can obtain through item reuse according to the sum of the grades of the received items.

The reuse selection interface module 1003 provides the user terminal 1020 with a user interface through which the user terminal can select a reuse item based on the determined range and probability of the grade of the item. In this case, the user interface may be a selection interface that selects the number corresponding to the number of items held by the user terminal 1020 for item reuse from the user terminal 1020.

When the reuse selection interface providing module 1003 receives n + 1 items held by the user terminal 1020 for item reuse from the user terminal 1020, the reuse selection interface providing module 1003 may be based on the range and probability of the determined item grade. The user terminal 1020 provides a selection interface for selecting n reuse items to the user terminal 1020.

In addition, a selection interface including a predetermined number of reuse items is provided to the user terminal 1020, and a selection interface is provided to the plurality of user terminals 1020. Here, the number of the plurality of user terminals 1020 may be determined according to the total number of selections that can be provided in the selection interface. For example, when providing 500 reuse items, a selection interface may be provided to 350 user terminals.

In addition, the user DB 1004 may store information of the user terminal 1020 and collection information for providing an item reuse service according to an exemplary embodiment of the present invention.

In the above-described method for providing an item reuse service in an online game according to an embodiment of the present invention, an application basically installed in a terminal (which may include a program included in a platform or an operating system basically mounted in the terminal) It may be executed by the user, or may be executed by an application (ie, a program) installed directly on the terminal by an application providing server such as an application store server, an application, or a web server associated with the corresponding service. In this sense, the method for controlling team play of an online game according to an embodiment of the present invention described above is implemented as an application (ie, a program) that is basically installed in a terminal or directly installed by a user, and can be read by a computer such as a terminal. Can be recorded on the medium.

Such a program may be recorded on a recording medium that can be read by a computer and executed by a computer so that the above-described functions can be executed.

As described above, in order to execute the method for providing the item reuse service in the online game according to each embodiment of the present invention, the above-described program is a computer language such as C, C ++, JAVA, machine language, etc. which can be read by a computer processor (CPU). It may include a code (Code) coded as.

The code may include a function code related to a function or the like that defines the functions described above and may include an execution procedure related control code necessary for the processor of the computer to execute the functions described above according to a predetermined procedure.

In addition, such code may further include memory reference related code as to what additional information or media needed to cause the processor of the computer to execute the aforementioned functions should be referenced at any location (address) of the internal or external memory of the computer .

In addition, when a processor of a computer needs to communicate with any other computer or server, etc., to perform the above-described functions, the code may be stored in a computer's communication module (e.g., a wired and / ) May be used to further include communication related codes such as how to communicate with any other computer or server in the remote, and what information or media should be transmitted or received during communication.

The functional program for implementing the present invention and the related code and code segment may be implemented by programmers of the technical field of the present invention in consideration of the system environment of the computer that reads the recording medium and executes the program, Or may be easily modified or modified by the user.

Examples of recording media that can be read by a computer recording a program as described above include, for example, a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical media storage device, and the like.

Also, the computer-readable recording medium on which the above-described program is recorded may be distributed to a computer system connected via a network so that computer-readable codes can be stored and executed in a distributed manner. In this case, any of at least one of the plurality of distributed computers may execute some of the functions presented above and transmit the result of the execution to at least one of the other distributed computers, and transmit the result The receiving computer may also perform some of the functions described above and provide the results to other distributed computers as well.

In particular, a computer-readable recording medium recording an application that is a program for executing the method of providing an item reuse service in an online game according to each embodiment of the present invention may be an application store server, an application, or a corresponding service. It may be a storage medium (eg, a hard disk, etc.) included in an application provider server such as a web server associated with the application server, or the application providing server itself.

A computer capable of reading a recording medium recording an application, which is a program for executing the method of providing an item reuse service in an online game, according to an embodiment of the present invention, may be a smart phone, as well as a general PC such as a general desktop or a notebook. It may include a mobile terminal such as a tablet PC, personal digital assistants (PDAs), and mobile communication terminals, as well as to be interpreted as all computing devices.

In addition, a computer capable of reading a recording medium recording an application which is a program for executing the method of providing an item reuse service in an online game according to an embodiment of the present invention may be a smart phone, a tablet PC, a personal digital assistant (PDA) and mobile communication. In the case of a mobile terminal such as a terminal, the application may be downloaded from the application providing server to a general PC and installed on the mobile terminal through a synchronization program.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to at least one. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. Codes and code segments constituting the computer program may be easily inferred by those skilled in the art. Such a computer program can be stored in a computer-readable storage medium, readable and executed by a computer, thereby realizing an embodiment of the present invention. As a storage medium of the computer program, a magnetic recording medium, an optical recording medium, or the like can be included.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims (14)

Game operations server,
Providing the user terminal with a reuse page for reusing an item held by the user terminal;
Receiving an input about the number of items held by the user terminal for item reuse from the user terminal;
Determining a range and probability of a grade of an item that the user terminal can obtain through item reuse according to the sum of the grades of the received items; And
A plurality of preset numbers of the user terminal to select the reuse item based on the range and probability of the determined item's rating Providing a user interface to the user terminal;
Items that can be obtained through reuse vary according to selection of each of the plurality of preset user interfaces of the user terminal.
The plurality of predetermined numbers of user interfaces are contents that are commonly provided to a plurality of user terminals that participate in reuse by accessing the game operation server, and a user interface selected from any one of the plurality of user terminals is another user terminal. A method for providing an item reuse service in an online game that is not selectable from among them. The method of claim 1,
Wherein the user interface comprises:
And a selection interface that selects a number corresponding to the number of items held by the user terminal for item reuse from the user terminal. 3. The method of claim 2,
Providing the user interface to the user terminal,
And providing a selection interface including a predetermined number of reuse items to the user terminal. The method of claim 3, wherein
After providing the user interface to the user terminal,
And upon receiving an input regarding item selection for reuse from the user terminal, displaying the number of selections subtracting the number of items selectable by the user terminal. Way. Claim 5 was abandoned upon payment of a set-up fee. 5. The method of claim 4,
Wherein the displaying comprises:
And upon receiving an input regarding selection of an item for reuse from the user terminal, displaying the remaining number of selections after subtracting the predetermined number. Claim 6 has been abandoned due to the setting registration fee. The method of claim 5, wherein
After the displaying step,
And if the remaining number of selections is less than or equal to a predetermined number, initializing the selection interface and providing a selection interface that initializes the total number of selections. The method of claim 3, wherein
Providing the user interface to the user terminal,
And providing a selection interface including the predetermined number of reuse items to a plurality of other user terminals that want to reuse an item in addition to the user terminal. Claim 8 was abandoned when the registration fee was paid. The method of claim 7, wherein
After providing the selection interface,
Upon receiving an input regarding selection of an item for reuse from the plurality of user terminals, subtracting the game money of each of the plurality of user terminals and displaying the selected reuse item according to the determined grade and probability of the reuse item. Method for providing an item reuse service in an online game, characterized in that it further comprises. A reuse item management module for providing a reuse page for reusing an item held by a user terminal to the user terminal, and receiving an input about the number of items held by the user terminal for item reuse from the user terminal;
A range and probability determination module for determining a range and probability of a grade of an item that the user terminal can obtain through item reuse according to the sum of the grades of the received items; And
And a reuse selection interface providing module configured to provide the user terminal with a plurality of predetermined numbers of user interfaces for allowing the user terminal to select reuse items based on the determined range and probability of the grade of the item.
Items that can be obtained through reuse vary according to selection of each of the plurality of preset user interfaces of the user terminal.
The plurality of predetermined numbers of user interfaces are contents that are commonly provided to a plurality of user terminals that participate in reuse by accessing a game operation server, and the user interface selected from any one of the plurality of user terminals is different user terminals. A server for providing an item reuse service in an online game, wherein the server is set to be unavailable. Claim 10 has been abandoned due to the setting registration fee. The method of claim 9,
Wherein the user interface comprises:
And a selection interface that selects a number corresponding to the number of items held by the user terminal for item reuse from the user terminal. Claim 11 was abandoned when the registration fee was paid. The method of claim 9,
The reuse selection interface providing module,
The server for providing an item reuse service in an online game, comprising: providing a selection interface including a predetermined number of reuse items to the user terminal. Claim 12 is abandoned in setting registration fee. 12. The method of claim 11,
The reuse selection interface providing module,
The server for providing an item reuse service in an online game, characterized in that a selection interface including the predetermined number of reuse items is provided to a plurality of other user terminals in addition to the user terminal. Claim 13 was abandoned upon payment of a registration fee. The method of claim 12,
The range and probability determination module,
And a rating and a probability of the reused item selected by the plurality of user terminals. A recording medium recording a program for implementing a method for providing an item reuse service in an online game,
Game operations server,
Providing the user terminal with a reuse page for reusing an item held by the user terminal;
Receiving an input about the number of items held by the user terminal for item reuse from the user terminal;
Determining a range and probability of a grade of an item that the user terminal can obtain through item reuse according to the sum of the grades of the received items; And
Providing the user terminal with a plurality of predetermined numbers of user interfaces through which the user terminal can select a reuse item based on the determined range and probability of the grade of the item;
Items that can be obtained through reuse vary according to selection of each of the plurality of preset user interfaces of the user terminal.
The plurality of predetermined numbers of user interfaces are contents that are commonly provided to a plurality of user terminals that participate in reuse by accessing the game operation server, and a user interface selected from any one of the plurality of user terminals is another user terminal. And the computer-readable recording medium is set so that selection is not possible.

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