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.

Set in a fictional universe, often (but not always) with fantastic or supernatural elements, alternate worlds, magic and monsters.

Near infinitely replayable games that usually feature, random generation, perma-death, and brutal difficulty. 

Unreal Engine is a 3D game creation tool