- The first iphone software using accurate face-tracking technique to control the game 
- Use your head as the controller -- your head rather than your hand -- absolutely new experience
- Retina display support. (IPAD2 NOT SUPPORT YET!)
- A game you can show off!
- Very attractive, playable, and challenging!

Just move your head lightly, and then you can control the spaceship in the game. The game is easy to get started and really challenging for experienced players!

Introduction:
Alien20 is a newly recruited spaceship-pilot,and his mission is to pass through the Asteroid belt to find the lost clansman. You need to learn how to use an advanced non contact operation mode to help him to control the spaceship. In the game, you will need to evade all kinds of meteorites during the flight, while using various game items to protect yourself and earn more points. Do remember your ultimate goal: save the life of the clansman!

How to play:
- At the beginning of the game, stabilize your head and your device, the software will locate your face in three seconds
- When the game starts, move your head lightly to control the spaceship, but please do not move too drastically 
- In the lesser scenario that the game lost the track of your face, just click the pause button at the upper left corner to relocate
- The tracking performance is heavily subject to the light intensity, so dark places may not be suitable for playing

Source: App Store