itch.io

Featuring games with three-dimensional graphics, environments, and gameplay mechanics. Depth and perspective create immersive virtual worlds.

Pretty sure everything is indie on itch.io but just in case you want something extra indie.

Independent pieces that can be connected together to from something greater

Unity is a game engine for 2D, 3D, AR and more

Voxels are small geometric primitives used to construct larger worlds. Sometimes called 3D Pixels, they are typically cubes.