Undermine by droqen 2010-08-24T07:40:00
Hoo wow, very nice indeed! I'm not sure what it is exactly about it that I find so appealing. I think it's the entire package.
All the enemies behave differently and are easily readable, the boss monster is iconic to the extreme, and the music getting more and more muted as you get hurt is a very nice effect. I just miss sound effects!