Abstract: A non-transitory storage medium storing a computer program for causing a computer to calculate an action of each object within a field to cause a match between the user and the opponent to proceed, and for providing the game in which the first turn of an offense and the second turn of a defense are switched between the user and the opponent based on a calculation result of the action, wherein the computer program causes the computer to serve as a selection opportunity provision unit that suspends the action of each object in conjunction with switching of the turns and provides an opportunity of selection regarding the match to the user, and a calculation control unit that controls calculation of the match so that the selection by the user is reflected in the calculation of the match within a target period until switching of the turns occurs next.