[wodenokoto]

Code Parade on Youtube has some nice tech demo for non-euclidean 3D game engine.

"Non-Euclidean Worlds Engine" - https://www.youtube.com/watch?v=kEB11PQ9Eo8

"Spherical Geometry Is Stranger Than Hyperbolic" - https://www.youtube.com/watch?v=yY9GAyJtuJ0

[zenorogue]

The first one of these videos is not about non-Euclidean geometry, though.

There are many cool 2D and 3D non-Euclidean games already existing and several cool new projects in development, see: https://medium.com/@ZenoRogue/non-euclidean-geometry-and-gam...