From the README:
Cubyz is a 3D voxel sandbox game (inspired by Minecraft).
Cubyz has a bunch of interesting/unique features such as:
Level of Detail (→ This enables far view distances.)
3D Chunks (→ There is no height or depth limit.)
Procedural Crafting (→ You can craft anything you want, and the game will figure out what kind of tool you tried to make.)
Written in Zig, of course
It appears to be inspired by Redis, but not an API-compatible replacement