Cypher is a fast-paced math game for both children and adults. 5-15 minute rounds. The object of the game is to win the most cards. Includes 55 cards high quality per deck. 44 Number Cards. 9 Operation Cards, 2 Times Table Cards, and Instructions. A great supplement or alternative to flash cards. Win cards by being the first to yell out the correct answer. Easy to learn and is adaptable to different children's abilities. Perfect for 3-6 players, Ages 8+ Operations in the game include addition, subtraction, and multiplication.