Unicorn is an assortment of children's games that are played using a deck of 27 cards. The deck consists of 13 pairs of animal cards plus a single unicorn card that cannot be paired. The games range across a variety of mechanisms and types, including push-your-luck, memory, simultaneous action, and solitaire, but all are based on simple pair matching. Some are variants of other well-known games but with the unicorn card adding extra features. Some games are suitable as classroom teaching tools.