Better get this one while you can. I think Atari will have something to say about it real quick. It is the arcade Space Invaders version and plays the same way. You can change the method of movement and enlarge the screen. It is expensive 4.99 but for Space Invader fans this is the one we have been waiting for until Atari releases the original. Ooops...I may be mistaken. It was originally created by Taito in Japan and that is who the developer is on the App. If they are one and the same then it may be here to stay unless Atari comes out with a different version.