...that's Galaga, Lordalmar...
Yeah, you're thinking of Galaga, dude, with the little bug ships. This is Space Invaders. Bit of a difference.
Anyways, this game is excellent. Having the new version, with the different ships, and the power-ups and everything, and when you're bored, you can go old-school. If I were to suggest anything, it would be a change in music for the new version. Tends to get a little annoying after a few levels. But other than that, pure rock-on-ness!