The best minecraft clone written in python you will find. Built from scratch using Pygame and ModernGL. https://www.youtube.com/watch?v=F-i20m6vxD8
Includes a simplex-based world generation with biomes, caves, trees, and ores.
Has the minecraft inventory and crafting system, complete with a crafting table and furnace.
Uses a simple flood fill lighting system with ambient occlusion to add to the vibe of the game.