Non-transitory computer-readable medium, information processing system, and method

1. A control method of a game executed by an information processing device, the method comprising the step of:

storing a plurality of first game media associated with a first player and a plurality of second game media associated with a second player, each of the plurality of first game media and each of the plurality of second game media having a plurality of parameters, the plurality of parameters including a first parameter and a second parameter different from the first parameter, each of the plurality of first game media being associated with a piece of ability information;

placing one or more first selection game media, selected from the plurality of first game media based on selection made by the first player, in a first area within a field in a first parameter state in which the first parameter is valid, such that one or more pieces of the ability information associated with the one or more first selection game media are made usable in the game;

in response to the first player selecting at least one of the one or more pieces of the ability information made usable, causing an event to occur, the event producing an effect corresponding to the selected at least one of the one or more pieces of the ability information;

placing one or more second selection game media, selected from the plurality of second game media based on selection made by the second player, in a second area within the field in a second parameter state in which the second parameter is valid;

in response to the one or more second selection game media being placed in the field, converting at least a part of the one or more first selection game media placed in the field from the first parameter state to the second parameter state; and

in response to the one or more second selection game media being placed in the field, changing a use status of the one or more pieces of the ability information associated with the one or more first selection game media converted from the first parameter state to the second parameter state.

2. The control method of claim 1 , wherein in response to the one or more second selection game media being placed in the field, the use status of the one or more pieces of the ability information associated with the one or more first selection game media converted from the first parameter state to the second parameter state is changed from Usable to Unusable.

3. The control method of claim 1 , further comprising:

converting, to the first parameter state, the one or more first selection game media converted from the first parameter state to the second parameter state; and

changing the use status of the one or more pieces of the ability information associated with the one or more first selection game media converted from the second parameter state to the first parameter state.

4. The control method of claim 3 , wherein the use status of the one or more pieces of the ability information associated with the one or more first selection game media converted from the second parameter state to the first parameter state is changed from Unusable to Usable.

5. The control method of claim 1 , further comprising the step of varying at least one of a first point associated with the first player or a second point associated with the second player by using the one or more pieces of the ability information.

6. The control method of claim 1 , further comprising the step of varying at least one of the plurality of parameters by using the one or more pieces of the ability information.

7. The control method of claim 1 , wherein parameter states of the one or more first selection game media and the one or more second selection game media are converted between the first parameter state and the second parameter state by using the one or more pieces of the ability information.

8. The control method of claim 1 , wherein the one or more first selection game media placed in the first area are moved to an area in the field other than the first area by using the one or more pieces of the ability information.

9. The control method of claim 1 , wherein the one or more second selection game media placed in the second area are moved to an area in the field other than the second area by using the one or more pieces of the ability information.

10. The control method of claim 1 , wherein a part of areas in the field is set as an area in which neither the one or more first selection game media nor the one or more second selection game media are placed, by using the one or more pieces of the ability information.

11. The control method of claim 1 , wherein the one or more pieces of the ability information made usable are displayed in an area outside the field on a game screen.

12. The control method of claim 1 , wherein the use status of the one or more pieces of the ability information selected by the first player is changed.

13. The control method of claim 12 , wherein the use status of the one or more pieces of the ability information selected by the first player is changed from Usable to Unusable.

14. An information processing device for executing a game, comprising:

a storage unit for storing a plurality of first game media associated with a first player and a plurality of second game media associated with a second player, each of the plurality of first game media and each of the plurality of second game media having a plurality of parameters, the plurality of parameters including a first parameter and a second parameter different from the first parameter, each of the plurality of first game media being associated with a piece of ability information;

a control unit configured to:

place one or more first selection game media, selected from the plurality of first game media based on selection made by the first player, in a first area within a field in a first parameter state in which the first parameter is valid, such that one or more pieces of the ability information associated with the one or more first selection game media are made usable in the game;

in response to the first player selecting at least one of the one or more pieces of the ability information made usable, causing an event to occur, the event producing an effect corresponding to the selected at least one of the one or more pieces of the ability information selected; and

place one or more second selection game media, selected from the plurality of second game media based on selection made by the second player, in a second area within the field in a second parameter state in which the second parameter is valid; and

a conversion unit configured to, in response to the one or more second selection game media being placed in the field, convert at least a part of the one or more first selection game media placed in the field from the first parameter state to the second parameter state,

wherein in response to the one or more second selection game media being placed in the field, the control unit changes a use status of the one or more pieces of the ability information associated with the one or more first selection game media converted from the first parameter state to the second parameter state.

15. A non-transitory computer-readable storage medium storing a program for causing an information processing device for executing a game to perform the step of:

storing a plurality of first game media associated with a first player and a plurality of second game media associated with a second player, each of the plurality of first game media and each of the plurality of second game media having a plurality of parameters, the plurality of parameters including a first parameter and a second parameter different from the first parameter, each of the plurality of first game media being associated with a piece of ability information;

placing one or more first selection game media, selected from the plurality of first game media based on selection made by the first player, in a first area within a field in a first parameter state in which the first parameter is valid, such that one or more pieces of the ability information associated with the one or more first selection game media are made usable in the game;

in response to the first player selecting at least one of the one or more pieces of the ability information made usable, causing an event to occur, the event producing an effect corresponding to the selected at least one of the one or more pieces of the ability information selected;

placing one or more second selection game media, selected from the plurality of second game media based on selection made by the second player, in a second area within the field in a second parameter state in which the second parameter is valid;

in response to the one or more second selection game media being placed in the field, converting at least a part of the one or more first selection game media placed in the field from the first parameter state to the second parameter state; and

in response to the one or more second selection game media being placed in the field, changing a use status of the one or more pieces of the ability information associated with the one or more first selection game media converted from the first parameter state to the second parameter state.