Some people asked about this so I figured I would provide it. It’s obviously not that useful without the entire Unity project and all of the art assets but it might be interesting to someone.
Source code:
http://www.wantonhubris.com/game/ShooterInTheAbstract/ShooterInTheAbstract_Src.zip
This is for the game itself:
http://www.wantonhubris.com/blog/2007/07/04/shooter-in-the-abstract/
Enjoy!
This game is very cool. It’s a really pleasure to play it.
Addictive and a nice style. Great work. 
The sound is starting to get music when more and more things to shoot appear and get shot. 
Thanks for the source!
Very nice of you to release the source of your game.
Very addictive, and has awesome potential for even more.
-Jeremy
Since my top score is now 78455, I guees I’ll have to agree.
I think if this had an online high-score table, and maybe some more variation in enemies, it would be good enough for a portal such as Shockwave. Actually I think it is better than much of what is there.
Nicely done… My only point of frustration is the spawning killing me… It would be nice if I had maybe .5 seconds to see a faint image of where the next enemy might appear.
An addictive game thought, awesome work.
EDIT: Well, I got to 37k on my second play… I see they do fade in… I guess I am craving some impact on collision.
Thanks all!
Yeah, enemy spawning was always a problem. I “solved” it by doing the fade in and also giving the player a small sphere of freedom, within which enemies can’t spawn. The trouble is that you’re moving around so fast that, generally, by the time the enemy decides that location X,X is a safe one and starts spawning you flick your mouse and are on top of him already.
Ahh well.