Those pesky aliens abducted a couple of humans to space! You set out for space with an army of soldiers. You can let soldiers work alone, but also in a team. Eliminate all the aliens, save the humans and don't let your own soldiers get hurt! To expand your troops you'll need gems: so collect as many of them as you can! Watch out for the exploding objects!
Use the mouse to fire and the arrow keys or WASD to move around. Press G if you want to group your soldiers or if you want to separate them en let them fight independently. Use T to teleport units that stay behind to your current location. Press + and - to change unit.