This game is a modern version like Space Invaders, with 10 levels and coloured invaders.
The last level is almost impossible. I didn't get it !
Bullets are limited to the initial level (100) and can be increased by shooting bombs during the game.
So there are three ways to lose :
No more bullet, no more lives and invaders touch down.
You have 3 lives in level 1 and one more at each new level.
2 GB RAM
10 MB available space
4 GB RAM
50 MB available space