itch.io

Uses two-dimensional "sprites", 2D images created and used on a flat plane, as opposed to the three-dimensional models or environments found in 3D games.

Things that are available on GitHub

Projects that use a Hexagonal Grid. Cells that have 6 sides.

Related to the process of arranging game maps using a set of tile graphics (often call tilesets)

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