This was the original "space defense " project. Unfortunately, when I changed it for Scratch in Space, I was too lazy to make another one so I just changed the original. This is a complete copy of the first one. Instructions: Double click flag to start. Press space or click to shoot. Don't let any of the invaders get past or hit you. You have three lives and try to last as long as you can. IMPORTANT: Don't go fullscreen. It glitches out and when you try to go back it does the same thing on the small screen.