https://tetr.io/ https://tetr.io/ is probably the best unofficial game, especially if you're into multiplayer variants. For single player https://jstris.jezeve

https://tetr.io/ https://tetr.io/ is probably the best unofficial game, especially if you're into multiplayer variants. For single player https://jstris.jezevec10.com/ https://jstris.jezevec10.com/ or https://simon.lc/tetr.js/ https://simon.lc/tetr.js/ are the best.