Algo: A Game to Sharpen Your Mind and Logic. Developed by the Arithmetic Olympic Committee, Eiji Wakabayashi, the Tokyo University Arithmetic Research Group, and Peter Frankl. Price: 1429 yen + tax. Box has some damage (see the last photo). [Game Overview] Algo is a board game that trains your thinking and logic skills. The rules are simple, but strategic thinking is required. It can be enjoyed by 1 to 4 players, making it perfect for playing with family and friends. [Target Age] This game is designed to be enjoyed by children and adults alike. Anyone can take on the challenge, regardless of age. [Number of Players] Playable by 1 to 4 players, offering flexibility for both small and large groups. Ideal for enjoying with friends and family.