WASD to move the plane, and the mouse moves the cross hair. Click to shoot plane-mounted machine gun Space bar shoots missile. The wooden-looking box gives you 500 ammo, and the metal-looking box gives you 5 missiles. (Oh, and yes I know this game runs at -3 FPS)
So, I was watching DevilDoggGaming play Kerbal Space Program "WAR", and I got the Idea to make a game based on the idea. So I did. And about 10 minutes in, I got some serious De Ja Vu, because I was on vacation in Florida the last week, and I dreamt about that exact moment! Has that ever happened to you? It happens to me a lot (especially in math class). That's how this game came to be.