A computer game program obtains data input by a player. Puzzle display information is output to cause number of puzzle elements forming part of a puzzle to be displayed in a game field so that at least one puzzle element among the number of puzzle elements is selectable. Outputting object display information causes an object to be displayed on a screen on which the number of puzzle elements are displayed. Puzzle attribute information and/or puzzle arrangement information associated with the selected puzzle element may be updated and a determination is made as to whether or not the updated puzzle attribute information and/or the puzzle arrangement information satisfies a predetermined condition. An object displayed on or around the puzzle element associated with the puzzle attribute information and/or the puzzle arrangement information may be moved to produce a predetermined effect in a game when the predetermined condition is satisfied.