I wanted to merge the game-play of tower defense with tactical elements from real time strategy games. I also needed to keep it simple enough for random people on the internet to pick up and play immediately, and simultaneously deep enough to capture the interest of more hardcore players. I settled on a compromise where the combat is automated, but everything that happens is the result of strategic decisions you make when designing your base.
I did all of the coding, art, and music myself. I enjoy designing space games because there isn't a lot of stuff to draw in space, and it saves me a lot of time to focus on everything else. The background nebula is randomly generated each time.
For the programming, I tried to add a bit of physics to everything. The guns don't just immediately point at the target, they have to take time rotating... etc. The ships have to figure out the best way to apply thrust to adjust their velocity and intercept their targets. I think subtle things like that give the fighting a bit more of a visceral feel.
Hopefully you have as much fun playing this game as I did making it.