Martians

the author of this app says:

Like in Space Invaders and Gorf, you have to kill the aliens before they kill you. As they shoot at you, your shields deteriorate until their lasers can finally hit you. Each level gets harder as the aliens shoot more lasers and also shoot more often, but you won't be able to even finish the first level until you register. Now it supports color!

Requirements

1.0 and Above