Planet Wars gives you two different modes: Main Campaign and Survival Mode. Move around with your A,S,D, and W keys and use the mouse to shoot. You'll want to hold down the mouse to get rapid fire which will kill the enemies much quicker. Remember, you have to give yourself reload time so you should be constantly moving. Once levels are complete you can go to the armoury and see what new weapons or weapon upgrades you can get and also add to your abilities. You can purchase back up soldiers as well, which will be helpful in the later levels. Give Planet Wars a go today!