Here's a The Moon Chaser by Reverie is an android running based game that uses the force of gravity. The object of the game is to navigate the mountains and collect as many gold coins as possible. The game features easy to learn controls and decent graphics to help make the game play better.

 The controls for the games are touch based and timing based. The controls are extremely easy to learn and reliable. You are supposed to touch while running downhill to increase the gravity and speed and release the touch while running up hill. Make sure to release and enforce gravity at the appropriate times to ensure you get the most coins in game play.

Overall, this is a simple and fun game. At the time of this review the Moon Chaser Android App is free. Thumbs Up.