Its always interesting to see how the game developers tried to differentiate themselves without being complete rip offs. This one went with a lot of space birds that you could shoot the wings off if you don't get a direct hit or shoot them before they hatch and a weird boss space ship level that you try to bust through the squishy underside with a million shots to get the queen or whatever in the middle. Rinse and repeat. Its fun and and nice change of pace from the usual classics but isn't going to replace galaga or any of those any time soon.