Planscape torment is in there if you want some old school crpg.

ScummVM is an old point and click adventure game engine with a ton of classics (Sam and max, day of the tentacle, Indiana Jones, etc).

lichess.org for free chess, puzzles and matches for different modes

Alphacross is pretty good for crosswords but it looks like they don’t let you add your own sources which is a bummer and a couple sources have circled letters in puzzles that don’t show up that can make it a little janky

And there’s always DOOM