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.

Tools for making games.

A game in which the player is not constrained to achieving specific goals and has a large degree of freedom to explore, interact with, or modify the game environment 

Sprites are generally 2D images used in games to represent objects. They can be animated or static, and come in different styles like isometric or top-down.