Manual operation means controls a motion of an operation target character in accordance with operation data outputted from an input device. Automatic motion control means controls the motion of the operation target character in accordance with a series of pieces of operation data which are prepared in advance. Game control means performs a first process when a first condition is satisfied as a result of control of the motion of the operation target character by the manual operation means only in a predetermined interval in a game in progress, performs a second process which is different from the first process when a second condition is satisfied, and executes the first when the control of the motion is performed by the automatic motion control means in at least a part of the interval regardless of whichever condition is satisfied.