Keisan Game Colección Juego(s) Keisan Game: Sansuu 5+6-nen (1986-10-30) Keisan Game: Sansuu 4-nen (1986-10-30) Keisan Game: Sansuu 3-nen (1986-04-25) Keisan Game: Sansuu 2-nen (1986-04-25) Keisan Game: Sansuu 1-nen (1986-04-25)