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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.

Games that never end. Infinite levels, limitless waves, and unbounded challenges.

Utilizing content created by algorithms rather than human made content. Often utilizes a "seed," a relatively small string that is used to control the randomization algorithm that generates the entire world.

Games where the character advances automatically, while the player must avoid obstacles.

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