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 2023-3-25, 493 players remain.

The market resolves YES if the living count is 400 (1/16 of the original population - 4 half lives) or less as of 12:05 AM EST on 2023-7-4, and NO if the living count is 401 or more at that time. It resolves early to YES if the living population should fall to or below 400 before that time, and to N/A if the game is canceled for any reason.