How about the fact that it's a rail shooter with cinematic values instead of arcade values? Meaning it puts you in the position of waiting to be allowed to shoot again while a scripted event you are probably not interested by continues to play.
Light gun games always had cutscenes, but they were to give you a few seconds break from shooting (most were fairly intense).
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.







