A board game to enjoy using your head: the logic of inspiration. Become better at math by playing! Develop logical thinking skills! Perfect for parents and children to play together. Algo is a card game developed by the Math Olympiad Committee. For 1-4 players. - Game Name: algo - Players: 1-4 - Age Range: Adults to children - Features: A game to make you smarter - Contents: Game board, tokens, rule book - Condition: Purchased about 10 years ago and used about 50 times.