I liked it, it was like old times playing with my brother!

SpaceMusic

You're getting there keep tuning it.

buggy, overly simple, no single player at all

The game is very awkward as it has no AI and MUST be played with two players on a single keyboard, while possible this is fairly awkard. I've played such games when I was younger and it is extremely difficult to do. Also the graphics are VERY simplistic and could have been much more interesting. The game also proved to be very buggy, sometimes wen the shots per second was up high the game would glitch and insist on only firing in semi auto. I do like the available options though. Please fix the bugs, insert better graphics (perhaps instead of triangle go for space ships to suit your theme) and try to devise a single player mode.