Features * 13 stages of increasing difficulty level
* Catch a real fun of the multi ending in each mode!
* Various enemy units
* 4 upgrade levels and 8 different weapons
* World-class sound, detailed graphics, and spectacular effects
* 3 different difficulty modes
* Boss battle in the final 13th stage
* Easy controls: just touch and move!
* Ranking System: Compete against players facebook friends.
* Catch a real fun of the multi ending in each mode!
* Various enemy units
* 4 upgrade levels and 8 different weapons
* World-class sound, detailed graphics, and spectacular effects
* 3 different difficulty modes
* Boss battle in the final 13th stage
* Easy controls: just touch and move!
* Ranking System: Compete against players facebook friends.