ConwayLife.com

Since nobody has done this yet, I've decided to do it myself.

Rules from this 2018 thread apply. In essence: nominations should be interesting and nontrivial, and they should be from the 2021 calendar year.

Nominations will be open until July 1st, 2021.

FYI, there's already a nominee collection thread that was started at the beginning of 2021. I don't really have anything else I want to nominate that wasn't already listed there.