Minetest
Description: Minetest is an open source voxel game engine. It is similar to Minecraft and allows players to explore procedurally generated 3D worlds and build anything they can imagine using blocks.
Type: software
Pricing: Open Source
Space Colony
Description: Space Colony is a space simulation and colony management game. Players build and manage their own space station, maintain the needs of colonists, gather resources, and explore the galaxy.
Type: software