Smash Hit
Price: Free / $1.99
Smash Hit is one of the best endless runners ever made. It uses a unique first person perspective and you have to throw metal balls at glass panels in order to avoid taking damage. Your hit points double as your ammo count so there is a micromanaging aspect to the game to throw as few balls as possible while also being hit as little as possible. The free version of the game contains the full game from start to finish. The premium version adds saving and player stats.