The object of Calypso is to construct a three-in-a-row line of the same color. Each player has seven pieces, and each piece has two colors—one color on top, one on the bottom. On his/her turn a player may play a piece from his stock, reposition a piece, or flip over a piece to its second color. Each player also has a wild piece which can serve as any color or as a blocker.
This game was previously published as Tau by Four Generations in 1972. The only difference in play was that the colored ends of the sticks were plastic "caps" that would not be visable when placed down in the holes. This therefore had a memory element that the Designer removed with later editions.