I am a game designer and programmer, working on roguelikes and non-Euclidean geometry.
You can download two of my bigger roguelikes from itch.io, Hydra Slayer and HyperRogue. Both of these games are based on mathematics, but in very different ways. HyperRogue is about exploring the very infinite world based on hyperbolic geometry, and Hydra Slayer is a game about managing your resources to fight hydras, where the combat system is based on old mathematical puzzles.
We are working on a non-Euclidean geometry engine, RogueViz, originally created for HyperRogue, but also used for some other smaller games and demos. There are also some other meta-roguelike and experimental games here.
I am also a member of the ADOM development team, and the developer of the Necklace of the Eye roguelike frontend (used by Hydra Slayer, ADOM, and Prime, and an unofficial port of Brogue).
Have fun!