https://tontine.cash/ is a MSCHF game. On 2021-12-27, 7141 players each paid $10 into a central pot and have been required to check in at least once a day by midnight EST/EDT or else be eliminated. The last remaining player will win the pot. As of 2023-10-03, 355 players remain.

Every year on January 1st, I will split off at least one new option from OTHER. (Edit: that is not happening. I've already put in up to 2035. If we somehow need more choices we'll burn that bridge when we get to it.) If you think the game will never pay out, you should buy YES on OTHER and put limit orders for NO on future years as shares on those come into existence and your possession. (Or you could just sell them off.)

Tontine

Tontine: everybody buys in, and the last person alive takes the pot. Log in every day to confirm you’re still alive.