テンテンルーテン (Tentenruten)

Tentenruten is a set collection game using cards with different numbers on the top and bottom. On your turn, you can choose to score a set, keeping one to show how many points you've earned, and passing the others, upside down, to your neighbor; or flip your hand, passing any one card to your neighbor, and they may choose the orientation.

The game end is triggered when either one player has played all of their cards or scored a certain number of points. The player who played all of their cards or scored the most points wins.