This game is the sequel to Galaxy Siege released last year, presumably by the same author, although I couldn't find it on Newgrounds. The first one is still worth playing IMO. (google it)
This sequel improved/changed quite a bit from the first game and has great graphics, fun gameplay with a good difficulty gradient. Perhaps a bit repetitive, fairly short and certainly would be improved by adding a story. Any story at all really. The bosses are great though. A really good job done on hit detections. You actually need to plan where you place modules as well as use different configurations for different missions. Side missions were a nice touch as well.
If it had a story (and a few more levels) it would be a solid 5/5 game.