According to the game control device, game control method, game control program, storage medium and game system of this invention, when composite processing on characters is performed, consumption points that are consumed in the composite processing are subtracted from the composition points corresponding to the user's user identifying information, and when the subtraction result is negative, predetermined point addition processing is performed until the subtraction result becomes zero or more. By performing the point addition processing as described above, the game control device, game control method, game control program, storage medium and game system can improve the user's operability without requiring the reselection of other characters to be composited.