Back in the early 80s my first arcade game was Space Invaders. Next it was Galaxian. Then came Galaga... it wasn't a breakthrough concept, but it was so beautifully done that it became my favorite classic arcade game of all time. Blasting away at aliens as they dance on the screen into formation... trying to get the dual canons... and the catchy intro music made it a memorable game to play. XGalaxy tries to recreate that experience and fails miserably. How this game has 4/5 stars in the Android Market is a mystery that I'll never solve.
I don't think this game would have been enjoyable even if I didn't have Galaga already, but when pitted against this game that's over 20 years old it falls flat. Apparently there's an XGalaxy 2. Maybe that's better... a lot better... one can only hope as the original isn't even worth a dollar.