An educational math game for young Japanese students. The second in a series of five games released in 1986 by magazine giant Tokyo Shoseki. Keisan Game: Sansuu 2 Nen ("Calculation Game: Math Year Two") is an educational game for the Nintendo Famicom and intended for slightly older Japanese schoolchildren. It includes four mini-games with basic arithmetic problems. In each mini-game, the player simply has to locate the number which completes the sum on the screen in order to proceed. The mini-game themes for this game include: a maze filled with treasure and demons, a penguin playing golf, an assembly line building a robot and moles inhabiting a grid. The game was followed by three games, each offering progressively more difficult math problems. Sansuu 2 Nen was released the same day as Sansuu 1 Nen and Sansuu 3 Nen on the 25th of April, with Sansuu 4 Nen and Sansuu 5+6 Nen released later the same year on October. None of the games were released outside of Japan.