Bid Coin is a trick-taking game where players try to win a number of tricks over several rounds in ways that sum to combinations a 1, 2, 3, 5, and 7.

When a player wins a trick, if it exceeds their current bid, they must use one of their current bid cards to increase their bid. If at the end of a hand, they have won a number of tricks equal to exactly their bid, they discard the bid cards used that round.

The first player to discard all of their bid cards wins.

There are also 0 bids and if no player is able to discard all of their bid cards after a few rounds, then the player who has the lowest value of bid cards remaining wins.