Keisan Game: Sansuu 5+6-nen is a single-player educational game designed to improve math skills, focusing on basic arithmetic operations such as addition and subtraction. In this game, players engage with various math problems presented in a colorful and interactive environment, aiming to solve them accurately to progress. Set in a context aimed at older Japanese students, it serves as the final installment in a series of five educational math games released in 1986 by Tokyo Shoseki, a prominent magazine publisher. It stands out with its focus on reinforcing fundamental math concepts through engaging gameplay, making it a useful tool for classroom learning and self-study, especially for students seeking to strengthen their arithmetic skills.