指輪を落とさないで ("Don't Drop Your Ring") is a trick-taking game with seven unbalanced suits. You try to predict how many tricks you'll win, but if you win a trick that contains the same number as the card you used, then the win counts twice! If you miss your bid, you lose points, which is symbolized by a ring falling lower on your finger. (The ring is on a plastic sheet that you slide lower on a hand scoring card.)
If the ring falls off your finger, you lose.