A game executing method for making a computer device execute a given game
by generating an image of a game space, and for analyzing and outputting
a power distribution of a character group in the game space, the
character group including a plurality of characters movable in the game
space. The method includes setting a plurality of sample points in the
game space; calculating a position of each character at a time that each
character has maintained a current moving condition for a predetermined
time period; calculating an arrival time needed for each character to
arrive at each set sample point from the calculated position as a
starting point; calculating the power distribution of the character group
based on the calculated arrival time of each character to each sample
point; and outputting a geographical power state of the game space based
on the calculated power distribution according to a predetermined output
method.