An incremental game, also known as a clicker game, tap game or idle game, is a video game whose gameplay consists of the player performing simple actions such as clicking on the screen repeatedly. This "grinding" earns the player in-game currency which can be used to increase the rate of currency acquisition.[1] In some games, even the clicking becomes unnecessary at some point, as the game plays itself, including in the player's absence.[2]
You can also "ascend" to essentially start over, but you'll unlock more special powers in the process.