I played your game up to region 13, and it's a neat little strange game. If I may offer some feedback, the flashing purple squares that fill up the whole screen are a bit too harsh. it might help if you had them fade in and out instead of had them pop up instantly. it was by far the biggest problem I had, I don't even have epilepsy and it still caused me physical pain.
aside from that I thought it had a lot of neat and interesting spins on the space invaders formula, I especially liked the falling blocks that forced you onto one side of the screen or the other.