[smellf]

Antichamber: https://store.steampowered.com/app/219890/Antichamber/

Also look at myhouse.wad for actual Doom in actual non-Euclidean spaces.

[jimbobthrowawy]

Hyperbolica exists too, and is pretty fun even if I haven't finished it yet. it has hyperbolic and spherical geometry in it at least.

The only game to give me motion sickness by watching a streamer playing it, and no motion sickness at all playing the VR version. Very odd.