I remember a Space Invaders clone for the PDP-11 that looked a lot like that. I don't think it was in color, though. I believe it ran under RT-11, but I don't remember the name of it.
VAX11 is tiny, but it's fairly cool. It's a time attack with some sort of rank system (using BulletML), but I have no idea what the rank is linked to. One thing I don't like about it is that the scoring system rewards using lots of bombs, and the best way to get more bombs is to die.