Non-transitory computer-readable storage medium having game program stored therein, game processing method, and system

A game processing method executed by a computer, the game processing method causing the computer to perform operations comprising:

• acquiring first data regarding movement, on a work surface, of a first mouse operated by one hand of a user;
• acquiring second data regarding movement, on a work surface that is the same as or different from the work surface, of a second mouse operated by another hand of the user;
• causing a first virtual object to move forward in a virtual space when the acquired first data and second data respectively indicate that the first mouse and the second mouse have been moved in a first direction;
• causing the first virtual object to move backward when the acquired first data and second data respectively indicate that the first mouse and the second mouse have been moved in a direction opposite to the first direction;
• and
• causing the first virtual object to turn left or right, based on a difference between a movement amount of the first mouse indicated by the first data and a movement amount of the second mouse indicated by the second data.

A system comprising a first mouse, a second mouse, and a game apparatus,

• the first mouse being configured to transmit first data regarding movement, on a work surface, of the first mouse,
• the second mouse being configured to transmit second data regarding movement, on a work surface, of the second mouse,
• the game apparatus being configured to receive the first data and the second data,
• the game apparatus being configured to execute a game program,
• the game program causing the game apparatus to:
• cause a first virtual object to move forward in a virtual space when the received first data and second data respectively indicate that the first mouse and the second mouse have been moved in a first direction;
• cause the first virtual object to move backward when the received first data and second data respectively indicate that the first mouse and the second mouse have been moved in a direction opposite to the first direction;
• and
• cause the first virtual object to turn left or right, based on a difference between a movement amount of the first mouse indicated by the first data and a movement amount of the second mouse indicated by the second data.