I’ll give a shout out to Fictorum, which is kinda janky but is a physics-heavy wizard simulator with on-the-fly spellshaping and some real wild spellslinging combos. Between the combat levels, there’s a travel/encounter-type rpg thing vaguely similar to FTL as you try to stay ahead of a wave of Bad Thingstm
I sometimes use nitter.poast.org, it works fine for me.