Complete and utter garbage. All that happens is that two rows of Windows logos (or whatever alternative graphic you choose) hop down slowly from the top of the screen. They don't even move from side to side, and all the levels are exactly the same (at least, they were for as many as I could be bothered to play). There's no variation, no challenge and nothing of interest here at all. If this were a genuine Space Invaders clone (i.e. a decent-quality reimplementation of the original game) it could be quite good, but it's the simplest possible attempt at the idea, with nothing at all to commend it. And the author asks for a donation in an initial pop-up screen! Good grief. Even as freeware it's a complete waste of time. This is a candidate for immediate deletion.