you forgot that in the original space invaders enemies used to increase speed every time you destroy one of them...anyway the rest is well done, nothing to new tho.

Nothing too new.
Appreciate the atari throw-back though.
Music flows well with the game
However you might want to think how it flows well with the color scheme of your game.
There are only red-shades and black in this game and I found that the music went well with the game but not portraying red/black theme and title. I was expecting more suspenseful music but anyways. .
Overall decent game and could be embellished with some action-y arcade music, harder levels, some kind of upgrades or possibly a boss?

Quite well made but it does look too much like space invaders.
Maybe if you made more levels and an upgrades system I would up my rating.
The game lags slightly too so it'll have to be a 2.5

Decent but it has been done so many times.