Santa Sumo is a 2-player microgame in postcard format. The postcard includes punch-out components: 2x Santa figures, 2x "1-cent" tokens, 2x "2-cent" tokens, and 2x score trackers.
Players compete in a sumo tournament for a work-free Christmas at the beach, using simultaneous action programming.
Each round, both players secretly plan two movement actions by marking their chosen spaces with the "1-cent" and "2-cent" tokens. The starting player first executes their "1-cent" action, moving their Santa to the selected space. The other player then executes their "1-cent" action. The process repeats for the "2-cent" actions in the same order.
If a Santa moves into a space occupied by the opponent's Santa, the opponent is pushed one space toward the ring's edge. If the opponent is already on an edge space, they are forced out of the ring, and the pushing player wins the match. The first player to win 3 matches wins the tournament.
—description from the designer