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.

Godot Engine - The free and open source 2D and 3D game engine

Games that are normally played on a table or other flat surface, such as board games, card games, dice games, miniature wargames, or tile-based games

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