Visually and accustically this seems great. The soundtrack matches the scenery and has some feeling of the old classics (well .. in the video I am missing a strong melody and some variation in the arrangement, but that´s minor.)
Isn´t the gameplay a bit boring, however? You are limited to a single screen at a time and there is no two-player mode, right? Then again: I can play the classic Invaders (on a Commodore Plus 4) again and again without really getting bored, so this is really no pont of criticism.