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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.

A style of game where the player must click on something to earn points, which they spend on upgrades to increase the number of points they earn per click, or to increase the number of points they earn over a period of time without clicking.

Only requires a single button (commonly the left mouse button or a single key on the keyboard) to operate the game's controls or interact with it.