Information processing device, information processing method, program, and system

Abstract

To improve a user's opportunity to acquire a desired game medium. [Solution] An information processing device, based on a request from a first user, selects one or more game media from a first collection including a plurality of game media, displays the selected one or more game media on a first screen of the first user's terminal, controls a specified first game medium from among the game media displayed on the first screen so that it can be exchanged with other users, and grants to the first user game media other than the first game medium from among the game media displayed on the first screen.

Description

[Technical field]

[0001] The present invention relates to an information processing device, an information processing method, a program, and a system. [Background technology]

[0002] In a conventional game, a user can acquire game contents by lottery. These game contents include characters, items, etc., and some of the game contents have a low probability of being acquired according to their rarity. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-213961 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional technology, if the game medium that a user has acquired through a lottery is not the one that the user desires, the user has no way of acquiring the desired game medium other than repeating the lottery. Therefore, an object of the present invention is to improve the opportunities for users to obtain desired game media. [Means for solving the problem]

[0005] An information processing device according to one embodiment of the present invention includes a processor, which selects one or more game media from a first collection including a plurality of game media based on a request from a first user, displays the one or more selected game media on a first screen of the first user's terminal, controls a specified first game medium from among the game media displayed on the first screen so as to be exchangeable with other users, and grants to the first user game media other than the first game medium from among the game media displayed on the first screen. Effect of the Invention

[0006] According to one embodiment of the present invention, it is possible to provide a user with an opportunity to acquire a desired game medium other than by repeatedly conducting lotteries, thereby improving the opportunity for the user to acquire the desired game medium. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 illustrates an example of a system configuration. [Diagram 2] FIG. 2 illustrates an example of a hardware configuration. [Diagram 3] FIG. 13 is a diagram showing an example of a screen. [Figure 4] FIG. 13 is a diagram showing an example of a screen. [Diagram 5] FIG. 13 is a diagram showing an example of a screen. [Figure 6] FIG. 13 is a diagram showing an example of a screen. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] <System configuration> Fig. 1 is a diagram showing an example of a system configuration of a game system 1 according to this embodiment. The game system 1 shown in Fig. 1 includes a game server 10 (an example of a server) and one or more terminals 20. The game server 10 and the terminals 20 are connected to each other so as to be able to communicate with each other via a communication network N such as the Internet, an intranet, a wireless LAN, or mobile communication.

[0009] The server 10 is an information processing device that performs some of the functions of the terminal 20 in providing a game, such as managing various information related to users (which may be called players) and executing some of the game processing. The server 10 may be composed of one or more information processing devices, or may be composed of a virtual server (such as a cloud server). The server 10 may be called a computer.

[0010] The terminal 20 is an information processing device that provides a game to a user, and the user can execute the game according to this embodiment by operating the terminal 20. The terminal 20 is, for example, a computer such as a mobile phone (including a smartphone), a tablet, a personal computer, an arcade game device, or a consumer game device. The terminal 20 may notify the server 10 of its own position detected using a GPS (Global Positioning System) or the like. The terminal 20 may be called a computer.

[0011] <Hardware configuration> 2 is a diagram showing an example of the hardware configuration of the server 10 and the terminal 20. The game server 10 and the terminal 20 each have a processor 11 such as a CPU (Central Processing Unit) or a GPU (Graphical Processing Unit), a memory (e.g., RAM (Random Access Memory) or ROM (Read Only Memory)), a storage device 12 such as an HDD (Hard Disk Drive) and / or an SSD (Solid State Drive), a network IF (Network Interface) 13 for wired or wireless communication, an input device 14 for accepting input operations, and an output device 15 for outputting information. The input device 14 is, for example, a keyboard, a touch panel, a mouse, and / or a microphone. The output device 15 is, for example, a display, a touch panel, and / or a speaker.

[0012] <First example> The system according to the first example of the present invention allows users to exchange game media acquired by lottery among each other. An example of data management in memory of a computer system that realizes this system, the contents of a screen displayed on a display, and data processing by a processor will be described below. In the following, it is assumed that the server 10 and the terminal 20 communicate with each other via a network N, and the server 10 processes data (requests, etc.) received from the terminal 20, transmits the data to the terminal 20, and displays the screen on the display.

[0013] [Example of data stored in memory] User Data: Stores each user's account information, a list of game media owned, and exchange history. Game media data: Stores information about the game media (items, characters, game objects, etc.) within the game, attributes (rarity, category, etc.), and owner information. Exchangeable list: Stores a list of game media that are desired to be exchanged and other game media that can be exchanged for it. Lottery results: Stores the results of the game media drawn based on the user's request.

[0014] [An example of a screen displayed on the display] Lottery result screen (Figure 3): The game media selected at the user's request is displayed. Exchangeable game content list screen (FIG. 4): A screen on which the user can check a list of exchangeable game content. In this embodiment, this is integrated into the exchange request screen. Exchange request screen (Figure 4): This screen allows a specific game medium to be exchanged with another user. Exchange approval screen (Figure 5): This screen is used to approve or reject exchange requests from other users.

[0015] [Example of data processing by a processor] Lottery process: Based on a request from a user (terminal 20), the processor randomly selects a game medium from a first set including multiple game media and displays the result to the user. The lottery result screen that displays the lottery result on the terminal of the first user is the first screen, and the lottery result screen that displays the lottery result on the terminal of the second user is the second screen. 3, it is possible to specify whether or not each game medium is eligible for exchange. On the lottery result screen 300, when a game medium 302 to be exchanged is selected by selecting a check box 304 and a button 308 for displaying an exchangeable list is selected, an exchangeable list showing a list of game media that can be exchanged for the specified game medium is displayed. On the other hand, if the user selects the receive button 306 without specifying the game medium to be exchanged, the game medium selected by the lottery is granted to the user. The game medium granted to the user can be used in games such as quests, but the user cannot use the game medium in a state before it is granted to the user.

[0016] Generation of exchangeable list: Among the game media selected by lottery, the game media designated by a user (e.g., the first user / second user) are added to an exchange list, and the list is made available for other users (e.g., the second user / first user). This allows the user to check the game media that can be exchanged with other users. For example, a user who has executed a first drawing to select a game medium from a first collection may be presented with an exchange list including the game medium selected from the first collection.

[0017] [Management of the exchange process] The processor controls the game medium designated by the user so that it can be exchanged with other users, including setting the status of the game medium to "exchangeable" so that other users can access the game medium. A list of game media that the user wishes to exchange and exchangeable game media (exchangeable list) is displayed, and the user is allowed to select the game media that he or she wishes to exchange from this list.

[0018] [Handling successful and unsuccessful exchanges] As shown in FIG. 4, in the exchangeable list 402 included in the exchange request screen 400, check the check box 406 of the game medium 404 you wish to acquire, check the check box 410 of the game medium 408 you wish to use in the exchange, and press the exchange request button 412, and an exchange request will be made to the user who owns the game medium 404. For example, when an exchange application is received from a first user for a first game medium selected by the first user from a lottery result and a second game medium set as exchangeable by a second user, the second user is notified of this. For example, on the exchange approval screen 500 in FIG. 5, when the approval button 506 is pressed and the exchange request is accepted and the exchange is completed (e.g., when the second user accepts), the processor updates the game media lists of both users, exchanges game media 502 and game media 504, and grants them to each user. If the reject button 508 is pressed on the exchange approval screen 500 and the second user does not consent, the processor adds the game medium desired to be exchanged (e.g., the first game medium) to the exchangeable list and provides other users with an opportunity to present another game medium that can be exchanged for this game medium. When "Exchange Request", "Register on Exchangeable List", or "Back" is selected on the exchange request screen 400, the screen returns to the lottery result screen 300. Here, the game media requested for exchange or registered on the exchangeable list are set as unreceivable (e.g., grayed out) on the lottery result screen 300. When "Receive" is selected on the lottery result screen 300, the game media other than the game media set as unreceivable are granted to the user from among the game media in the lottery results.

[0019] [Exchangeable list update and notifications] The processor periodically updates the exchangeable list and notifies the user of information about game media that have newly become exchangeable or that have been added to the exchangeable list, thereby enabling the user to always have access to the latest available game media.

[0020] In this way, the processor performs a series of processes such as drawing lots for game media, generating and updating the exchangeable list, managing the exchange process, and notifying the user of the exchange results. These processes provide a foundation for efficient and smooth exchange of game media between users.

[0021] <Second example> In a second example, if the user does not specify a game medium with which the user wishes to exchange the game medium, the game medium is added to the exchangeable list. Below, an example of data stored in the memory, a screen displayed on the display, and data processing by the processor in a computer system will be described.

[0022] [Example of data stored in memory] User data: Stores each user's identification information (e.g. user ID, username, etc.) and a list of game media owned by the user. Game media data: Stores the identification information, name, category, rarity, etc. of each item (game media) used in the game. Exchangeable list: Stores a list of game media that the user wishes to exchange and other game media that can be exchanged for it. Exchange request data: Stores an example of an exchange request made by a user, the specified game content, and the request status (successful, unsuccessful, pending, etc.).

[0023] [An example of a screen displayed on the display] Exchangeable list screen: A screen on which the user can check a list of exchangeable game media. The list also includes newly added game media. Exchange request screen: A screen where a user specifies the game media they wish to exchange with another user and makes an exchange request. If no specification is made, the media will be automatically added to the exchangeable list. Exchange Notification Screen: Displays notifications regarding successful, unsuccessful exchanges, or additions to the exchangeable list.

[0024] [Example of data processing by a processor] [Processing replacement requests] The processor receives an exchange request from a user and confirms information about the specified game medium. If the user does not specify the game medium that he or she wishes to exchange, the processor automatically adds the game medium to the exchangeable list, which allows other users to make exchange requests for the game medium. For example, when a first user presses the register to exchangeable list button 414 without selecting the game medium he or she wishes to exchange from the game media included in the exchangeable list 402 on the exchange request screen 400 of FIG. 4, the first game medium is registered in the exchangeable list. Thereafter, the user presses button 416 to return to the lottery result screen 300, and presses button 306 to receive the lottery results; game media other than the first game media registered in the exchangeable list are then granted to the first user.

[0025] [Updated exchange list] The processor updates the exchangeable list to include the newly added game media, the list providing an overview of the game media that the user can exchange with other users. This updated list allows users to stay aware of exchange opportunities in real time.

[0026] [Send user notifications] The processor sends a notification to the relevant user regarding the addition of the game medium to the exchangeable list, the notification informing the user that his / her game medium has been newly added as an item eligible for exchange. The notification may include information such as the date and time when the game medium was added and the reason for its addition (because the user did not specify the game medium they wish to exchange).

[0027] [Monitor and process exchange requests] The processor monitors exchange requests from other users for the game media that have been added to the exchangeable list. When an exchange request is made, the processor processes the request and executes the exchange of the game media between both users. If the exchange is successful, the processor updates the game media lists of both users and notifies both users that the exchange is complete.

[0028] Through these processes, the processor efficiently manages the game media exchange system, and ensures that game media are effectively utilized even when the user does not specify the game media that he or she wishes to exchange, thereby enabling the user to maximize the use of the game media that he or she owns and to find new exchange opportunities.

[0029] <Third Example> For the third example, an example of data stored in the memory, a screen shown on the display, and processing of the data by the processor will be described.

[0030] [Example of data stored in memory] Set of game media: As a first set, information on a plurality of game media (e.g., characters, items, etc.) is stored. This set is the subject of a lottery in response to a request from a first user or a second user. User information: Information such as the identification information of the first and second users, past exchange history, currently owned game media, and candidates for exchangeable game media is stored. Exchangeable list: A list of game media that can be exchanged between the first user and the second user. It also includes information on candidates for exchangeable game media specified by the second user.

[0031] [An example of a screen displayed on the display] Screens displayed on the devices of the first and second users: The game media selected by lottery is displayed. The first screen is displayed on the device of the first user, and the second screen is displayed on the device of the second user. Exchange request screen (exchangeable list (FIG. 6)): A list of exchangeable game media is displayed in response to an operation by the first user. In this example, the list also includes candidates for exchangeable game media specified by the second user.

[0032] [Example of data processing by a processor] Lottery process: A game medium is selected from the first collection based on requests from the first user and the second user. Display process: The selected game media are displayed on the terminals of the respective users. For example, as shown in the exchange request screen 600 of Fig. 6, the exchangeable list 602 displays exchange candidates 618 for the game media 604 designated by the second user for the second game media. The exchange candidates for the game media may be designated based on the conditions (ID, attributes, name, etc.) of the game media. Control of exchange process: It is determined whether the game media specified by the first user and the second user are in an exchangeable state, and if the conditions are met, the exchange is automatically executed. In particular, if the first game medium specified by the first user is included in the candidates for exchangeable game media specified by the second user, the processor directly executes the exchange without the consent of the second user. In other words, if game media 604 and game media 608 are specified and game medium 608 is included in exchange candidates 618 for game medium 604, when exchange request 612 is pressed, the exchange of game media 604 and game medium 608 is executed without displaying exchange approval screen 500 shown in FIG. 5.

[0033] Updating the exchange result: After the exchange is executed, the information on the game media owned by the first user and the second user is updated. The exchanged game media is reflected in the ownership list of each user.

[0034] Record of exchange: Whether the exchange is successful or not, a record of this operation may be stored in memory as part of the user information.

[0035] Triggering automatic exchange: If the first game medium designated by the first user is included in the candidate list of exchangeable game media designated by the second user and the first user wishes to exchange the second game medium, the processor automatically executes the exchange, thereby eliminating communication between users and additional approval procedures and realizing a smooth exchange process.

[0036] Update of information: When the exchange is executed, the newly owned game media is displayed on the devices of the first user and the second user, and the user information in the memory is updated, and the newly acquired game media is added to the user's owned list.

[0037] Display update: After the exchange is performed, the latest game media information is displayed on the displays of the terminals of the first user and the second user, including the newly acquired game media and updated information on the exchangeable game media list.

[0038] The above process allows users to exchange items in the game more efficiently and quickly. The execution of automatic exchange promotes interaction between users, and by specifying candidates for items that users wish to exchange in advance, flexible exchange based on the users' wishes is realized.

[0039] <Fourth Example> Regarding the fourth example, an example of data stored in the memory of a computer system, a screen shown on a display, and processing of the data by a processor will be described.

[0040] [Example of data stored in memory] Game media information: Examples of each game media's identification information, owner information, exchangeable status, exchange period, etc. are stored. Exchange list and period information: Information regarding the first period designated by the first user, the game media added to the exchangeable list, and the time of addition are stored. User information: Includes profile information of the first and second users, exchange history, and a list of currently owned game media.

[0041] [An example of a screen displayed on the display] Exchangeable list screen (Figure 8): Displays the game media that the first user wishes to exchange and a list of exchangeable game media (exchangeable list). An option to specify the first period may also be displayed. Period Expiration Notification Screen: When the first period has elapsed and the game medium for which the exchange was not completed is given to the first user, a notification to that effect is displayed.

[0042] [Example of data processing by a processor] Management of exchange list and period: The addition of game media to the exchangeable list by the first user and the designation information of the first period are received and stored in memory. Monitoring for lapse of time period: The processor monitors each first time period of the game media added to the exchangeable list to detect lapse of time period. Execution of automatic granting: For game media for which the first period has elapsed and the exchange has not been completed, the processor automatically grants the game media to the first user and updates the user information. Displaying a notification: When automatic granting occurs due to the passage of a period of time, a notification screen is displayed on the device of the first user to inform the user of the results of the transaction.

[0043] [Acceptance and processing of period-specific applications] When a first user specifies a first period for the first game medium, the processor accepts the specification and stores the specification in the memory. The period is calculated from the time the game medium is added to the exchange list, and serves as a basis for automatically granting the game medium to the first user if the exchange is not completed before the period has elapsed.

[0044] Processing for period designation: When a first user designates an exchange period for a particular game medium, that information is recorded in memory and associated with the information on the game medium. This period is used as a countdown until automatic granting in the event that an exchange with another user is not completed. Period monitoring and automatic granting: When a specified first period has elapsed, the processor executes a process to automatically grant the unexchanged game media to the first user, including updating game media information in memory and adding the media to the first user's list of owned game media.

[0045] Notification and feedback: When the game content is automatically granted, a notification is displayed on the first user's device indicating which game content has been granted over a period of time. This allows the user to immediately check the final result of the transaction, and may also provide information for reviewing the transaction history.

[0046] <Fifth Example> Regarding the fifth example, an example of data stored in the memory of a computer system, a screen shown on a display, and processing of the data by a processor will be described.

[0047] [Data stored in memory] Game media information: An example of each game media (e.g., name, type, owner, exchange status, etc.) is stored. In particular, information on whether each game media is from the first set or another set (e.g., the second set) is also included. Exchange constraint information: Exchangeability constraints for each game medium (e.g., only exchangeable with game media in the first set) are stored. User information: User identification information, game media owned, game media desired to be exchanged, and exchange history are stored.

[0048] [An example of a screen displayed on the display] Game media selection screen: A list of game media owned by the user and exchangeable game media is displayed. In addition, a distinction between game media from the first set and game media from other sets may be displayed so that the user can decide whether to exchange the game media. Exchange restriction explanation screen: An explanation is displayed that the game media can only be exchanged with game media from the first set, and that the game media cannot be exchanged with game media from other sets.

[0049] [Example of data processing by a processor] Determining exchangeability: When a user selects a game medium that he or she wishes to exchange, the processor determines whether the game medium is from the first set or from another set and updates the list of exchangeable game mediums based on the exchangeability constraints. Applying an exchange constraint: If the game content that the user wishes to exchange is from the first set, the processor identifies game content of other users that can be exchanged for that game content, and applies a constraint that the game content can only be exchanged with game content from the first set, so that the game content cannot be exchanged with game content from any other set.

[0050] Processing exchange requests: When a user takes an action indicating that they wish to exchange, the processor receives the exchange request and evaluates whether the requested exchange complies with the constraints. If they wish to exchange for game media from the first set, the processor checks whether there are other users' game media that match, and if so, allows the exchange to proceed.

[0051] Notification of non-exchangeability: If the user wishes to exchange for game media from a set other than the first set, the processor notifies the user that the exchange is not possible.

[0052] Confirmation and update of exchange: If an exchange is possible based on the constraints, the processor establishes an exchange between the two users and updates the relevant data (information on the game media owned by the users, exchange history, etc.) in the memory. This update may include changing the owned game media and recording the exchange history. It should be noted that the present invention is not limited to the above examples, and the above examples can be appropriately combined.

[0053] <Additional Notes> [General-purpose subject] One object of the present invention is to improve the opportunities for users to acquire desired game media. [Appendix 1] a processor, the processor comprising: selecting one or more game media from a first collection including a plurality of game media based on a request from a first user; displaying the one or more game media selected by lottery on a first screen of a terminal of the first user; Controlling a specified first game medium from among the game media displayed on the first screen so as to be exchangeable with another user; granting to the first user game media other than the first game medium among the game media displayed on the first screen; Information processing device. According to Supplementary Note 1, a user can be provided with an opportunity to acquire desired game media other than through repeated lotteries. [Appendix 2] the processor displays an exchangeable list which is a list of game media which can be exchanged for the one or more game media selected by lottery in response to an operation of the first user; 2. An information processing device according to claim 1. [Appendix 3] The processor, Selecting one or more game media from the first collection based on a request from a second user; displaying the one or more game media selected by lottery on a second screen of a terminal of the second user; Controlling a specified second game medium from among the game media displayed on the second screen so as to be exchangeable with another user; executing an exchange of the first game medium and the second game medium in response to an operation of at least one of the first user and the second user; 3. An information processing device according to claim 2. [Appendix 4] the processor receives an exchange request from the first user, the exchange request designating the second game medium and the first game medium, and, if accepted by the second user, executes the exchange of the first game medium and the second game medium. 4. The information processing device according to claim 3. [Appendix 5] the processor adds the first game medium to the exchangeable list if the second user does not consent. 5. The information processing device according to claim 4. [Appendix 6] the processor adds the first game medium to the exchangeable list when the first user does not specify a game medium that the first user wishes to exchange for the first game medium. 4. The information processing device according to claim 3. [Appendix 7] the processor, when the second user has designated candidates for game media exchangeable with the second game medium and the first game medium is included in the candidates for game media, executes the exchange of the first game medium with the second game medium without the consent of the second user; 4. The information processing device according to claim 3. [Appendix 8] the processor grants the first game medium to the first user when a first period has elapsed since the first game medium was added to the exchangeable list without an exchange of the first game medium with another game medium being completed. 4. The information processing device according to claim 3. [Appendix 9] The processor accepts, from the first user, a designation of a first period to be set on the first game medium. 9. The information processing device according to claim 8. [Appendix 10] the processor controls the first game medium so as to be exchangeable with a game medium selected by another user from the first set, and controls the first game medium so as not to be exchangeable with a game medium selected by another user from a set other than the first set. 2. An information processing device according to claim 1. [Appendix 11] a processor randomly selecting one or more game media from a first collection including a plurality of game media based on a request from a first user; A processor displays the one or more selected game media on a first screen of a terminal of the first user; a processor controls a specified first game medium from among the game media displayed on the first screen so as to be exchangeable with another user; a processor grants to the first user game media other than the first game medium among the game media displayed on the first screen; Information processing methods. [Appendix 12] selecting one or more game media from a first collection including a plurality of game media based on a request from a first user; displaying the one or more game media selected by lottery on a first screen of a terminal of the first user; Controlling a specified first game medium from among the game media displayed on the first screen so as to be exchangeable with another user; granting to the first user game media other than the first game medium among the game media displayed on the first screen; A program that causes a processor to execute a process. [Appendix 13] A server and a terminal are provided, The server, selecting one or more game media from a first collection including a plurality of game media based on a request from a first user; displaying the one or more game media selected by lottery on a first screen of a terminal of the first user; Controlling a specified first game medium from among the game media displayed on the first screen so as to be exchangeable with another user; granting to the first user game media other than the first game medium among the game media displayed on the first screen; system. [Explanation of symbols]

[0054] 1: Game System 10: Server 11: Processor 12:Storage device 14: Input device 15: Output device 20: Terminal 300: Lottery result screen 302: Game media 304: Checkbox 306: Button 308: Button 400:Replacement request screen 402 : Exchangeable List 404: Game media 406 :Checkbox 408: Game media 410 :Checkbox 412: Exchange request button 414: Button 416: Button 500: Exchange approval screen 502: Game media 504: Game media 506: Approval button 508: Reject button 600:Replacement request screen 602: Exchangeable List 604: Game media 608: Game media 612:Exchange application 618: Exchange candidate N: Communication network

Claims

1. a processor, the processor comprising: selecting one or more game media from a first collection including a plurality of game media based on a request from a first user; displaying, on a first screen of the terminal of the first user, one or more of the lottery-selected game media in a state in which each of the lottery-selected game media can be designated as an exchangeable game medium; when an operation to display an exchangeable list, which is a list of game media of other users that can be exchanged for the specified game medium, is received while an exchangeable game medium is specified from among the game media shown on the first screen, control is performed to enable an exchange of a first game medium that the first user offers in an exchange from among the game media displayed on the first screen for another game medium that the first user has specified as the game medium that he or she wishes to acquire from the exchangeable list that includes the game media of other users selected by lottery from the first collection, to a user who has set the other game medium as exchangeable; granting to the first user game media displayed on the first screen, other than game media designated as exchangeable with other users, in a state usable for a game; Information processing device.

2. a processor, based on a request from a first user, selecting one or more game media from a first collection including a plurality of game media; a processor causes the first user's terminal to display, on a first screen that is a screen showing a lottery result, one or more of the lottery-selected game media in a state in which each of the lottery-selected game media can be designated as an exchangeable game medium; when an operation to display an exchangeable list, which is a list of other users' game media exchangeable for a specified game medium, is accepted while an exchangeable game medium is specified from among the game media shown on the first screen, the processor controls to enable a request for an exchange of a first game medium that the first user offers in an exchange from among the game media displayed on the first screen with another game medium that the first user has specified as the game medium he or she wishes to acquire from the exchangeable list including the game media of other users selected by lottery from the first collection, to a user who has set the other game medium as exchangeable; a processor grants to the first user game media displayed on the first screen, other than a game medium designated as exchangeable with another user, in a state usable for a game; Information processing methods.

3. selecting one or more game media from a first collection including a plurality of game media based on a request from a first user; displaying, on a first screen of the terminal of the first user, one or more of the lottery-selected game media in a state in which each of the lottery-selected game media can be designated as an exchangeable game medium; when an operation to display an exchangeable list, which is a list of game media of other users that can be exchanged for the specified game medium, is received while an exchangeable game medium is specified from among the game media shown on the first screen, control is performed to enable an exchange of a first game medium that the first user offers in an exchange from among the game media displayed on the first screen for another game medium that the first user has specified as the game medium that he or she wishes to acquire from the exchangeable list that includes the game media of other users selected by lottery from the first collection, to a user who has set the other game medium as exchangeable; granting to the first user game media displayed on the first screen, other than game media designated as exchangeable with other users, in a state usable for a game; A program that causes a processor to execute a process.

4. A server and a terminal are provided, The server, selecting one or more game media from a first collection including a plurality of game media based on a request from a first user; displaying, on a first screen of the terminal of the first user, one or more of the lottery-selected game media in a state in which each of the lottery-selected game media can be designated as an exchangeable game medium; when an operation to display an exchangeable list, which is a list of game media of other users that can be exchanged for the specified game medium, is received while an exchangeable game medium is specified from among the game media shown on the first screen, control is performed to enable an exchange of a first game medium that the first user offers in an exchange from among the game media displayed on the first screen for another game medium that the first user has specified as the game medium that he or she wishes to acquire from the exchangeable list that includes the game media of other users selected by lottery from the first collection, to a user who has set the other game medium as exchangeable; granting to the first user game media displayed on the first screen, other than game media designated as exchangeable with other users, in a state usable for a game; system.

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