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Games that try to simulate real-world activities (like driving vehicles or living the life of someone else) with as much realism as possible. Simulators generally require more study and orientation than arcade games, and the best simulators are also educational.

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.

Products that involve or comprise source code, including programming games; does not refer to products with their own source code available, open source or not.

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