In 12 Chip Trick, a trick-taking game for exactly 3 players, the players are attempting to score the most points, but if a player scores 21 or more, their points are halved.
The game uses 12 discs, half red and half black, numbered 1 to 12. It is a "may follow" game where the players draft the discs played to the trick back to their hands. The winner takes a disc face up, not to be used again. The other players take discs face down, into their hand.
The game ends once a player has no discs to play. All players reveal their 4 discs and sum their points. The player with the most points after a number of rounds wins.