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 2023-11-28, 325 players remain.

Each living player has an avatar, chosen freely at the start of the game. They had a choice among 7 colors and 10 sprites, resulting in 70 possible choices of avatar. Of these 70 species, 67 remain: all but yellow lizard-mage, yellow kobold, and orange plague-doctor.

Below: the state of play as of day 700, 2023-11-28. Names in white are the endlings of their species.

The market resolves to the first color of avatar to go extinct, immediately upon my recognition that a color has in fact gone extinct.

In the event that multiple colors all have their endlings die on the same day, the market will resolve equally to all such correct answers.

I will extend the closing date as needed.