Considering the 10 in sound, I assume the game has some quality comic dialogue? If so, it wouldn't take a massive marketing campaign for it to get it into people's minds. People remember humour better than anything in advertisements, and it's visual style is reminiscent of a pixar movie. That's how I might try to market it.
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.







