Image generation system, program and information storage medium

An image generation system which generates an image comprising:

• a memory which stores a program and data for generating an image;
• and
• at least one processor which is connected to the memory and performs a processing for generating an image,
• wherein the processor comprises:
• a game processing section which performs a game processing based on operation data from a control section, and performs a processing to terminate a game when a predetermined game termination condition is satisfied;
• a parameter calculation section which calculates a parameter of a consumption item which is consumed as a game progresses at a predetermined rate of consumption based on the predetermined game termination condition;
• and
• an image generation section which generates a game image based on a result of the game processing,
• wherein the predetermined game termination condition is a condition that, when satisfied, terminates the game;
• wherein the predetermined game termination condition is at least one of a number of laps on a course corresponding to a maximum number of laps required by one game play, a time limit of a game corresponding to a time period measured from the start of the game to the termination of the game, or a setting of a game quota corresponding to a quota to be attained by a player in the game, and
• wherein the parameter calculation section increases the rate of change of the parameter of the consumption item, as the number of laps on the course is reduced, as the time limit of the game is shortened, or as the setting of the game quota is reduced.