I'm working on what I hope to be a high-performance voxel engine from scratch in Rust in my free-time.

https://www.youtube.com/watch?v=XlolXvBDmRY

Cubic chunks, full lighting engine, opting to be non-deterministic, everything is unsigned integer math except for rotation and rendering, multiplayer is mostly implemented, built to be able to handle heavy simulation.. the foundation work is almost done. Right now it's just a hobby to try to build the best thing I can build. I work on it because it's fun.