Zombies, Run! wasn't covered in RPS' roundup, probably because we're smartphone only and were quite early - but we were the biggest videogame project of 2011 with $73k from 3500 backers.
Through a pretty herculean effort, we launched on time in February. Since then we've sold almost 250,000 copies across iOS, Android, and Windows Phone, and grossed somewhere in the region of $1.5 million.
So yeah, I'd say it's working for some people. Did backers know what they were going to get? I don't know, Zombies, Run! is a very original idea so we couldn't just say "It's like X but with Y." But they seem pretty happy as far as we can tell.