In the mission you must avoid collisions of asteroids. The alien spaceships will come nowhere and shoot you expectedly. So, keep you alert and alive. After you collect one energy ball, you gain 100 points. The numbers of killing enemy spaceships and destroying asteroid will also be recorded for achievements.
Features:
1) Endless waves of attack.
2) Global ranking system.
3) Kill 50 alien spaceships to get an achievement.
4) Destroy 100 asteroids to obtain an achievement.
5) Gain 3,000 points to get an achievement.
Good luck and enjoy it.
Note: the Ads shows up when the game starts up and you come back to the menu after game over.
