Some fun things I’ve made:

engine-game.com. Deckbuilding puzzle game with daily challenges.

Anagrams and Double Anagrams. Word jumble game.

grid-game. Simple timed puzzle game.

Asymptotic analysis. A mystery-hunt style Dominion puzzle. [Collaboration with Vee Xing.]

reciprocity.io. Matchmaking site. [The original was a collaboration with Katja Grace and Stephanie Zolayvar. It led to about a thousand first dates, including my first date with my wife. Buck Shlegeris remade it in 2021 and now maintains it.]