American Bookshop Card Gameis a trick-taking game in which players must follow suit where possible, there is no trump, and the highest card of the lead suit wins the trick.
Each card a player takes is worth -1 point. However, the player who takes the most cards in each of the suits earns +1 point per card instead.
Tricks may end prematurely as if the sum of the ranks in play exceed a certain value, depending upon player count, the trick ends immediately, and the last player who played a card takes the trick. As such, players may not have even hand sizes. A round ends when one player is out of cards, and the other players then have an opportunity to add some cards to their score pile.
The player with the most points after a few rounds wins.