Terrific little game this is, aside from the obvious games like Gryzor, Contra etc, I'm mostly reminded of an old arcade game called Midnight Resistance that I spent alot of quarters on back in the day.

What I love most about the game though is there is alot of details put into each level that you don't notice when first running through the levels, so the game has a bit more to it than just simply running and gunning. If I were a game reviewer I'd describe the game as having a "light puzzle element". All in all, it's two thumbs up, way up :)