2D auto runner

2D auto runner games are a form of auto runners characterized by simpler 2D mechanics, where the game progresses sideways as the player runs (typically from right to left), in contrast with other styles that are built around a more elaborate 3D interface. Different styles of the genre have developed, such as more complex games inspired by 2D platformers where the player needs to traverse through more complex terrain to keep running, and games such as Tiny Wings where the player gains and loses speed by accurate movement, or in contrast - the straightforward mechanics of Jetpack Joyride and Flappy Bird.