From Song Zuofei:
Space Raider is a game of controlling spaceship to avoid enemies, you can slide finger to control the spaceship easily on screen, and using different weapons to beat them.
To complete each level, you should collect numbers of power box in the level. In first levels, you don't have weapons, and the only way to finish level is to avoid the enemies, but at the Level 4, you would start to use different kinds of weapons: Missile. Beat them by using these weapon, try to don't make them disappointed......
There are only 4 levels and 1 missile weapon in the Lite Version.