Patent ID: 8267784

Claim:
A game system comprising: an operation input portion having an operation portion for each of players; a sound output portion outputting reproduced sound; a music data storage portion storing music data for reproducing music; a music reproduction portion reproducing music based on the music data to be output from the sound output portion; a sequence data storage portion storing sequence data where operation timings to operate the operation portion while the music is reproduced are described; a display portion displaying a game image where a lane having a predetermined length is divided at a division position, the lane extending between operation criterion positions each of which corresponds to each player; a correlation portion correlating one area of the lane divided at the division position to one player, and the other area of the lane divided to the other player; a division position determination portion determining the division position each time when a predetermined condition is satisfied during the game; and a display control portion displaying the game image where, in the area corresponding to each player, the operation instruction marker to direct a corresponding player each of the operation timings is arranged, wherein the display control portion has an area determination portion determining, based on the division position determined by the division position determination portion, a size of the area of the lane corresponding to each player; and a marker position determination portion determining a position of the operation instruction marker corresponding to each of the operation timings by regarding the operation criterion position as a current time, in such a way that a relative positional relation between the operation instruction marker and the operation criterion position changes in accordance with a temporal progress of the music so that the position of the operation instruction marker corresponding to the operation timing described in the sequence data reaches the operation criterion position of the corresponding player at the operation timing taught by the operation instruction marker.