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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.

PICO-8 is a fantasy console powered by Lua. Games are distributed as cartridges which double as PNG  images. 

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.