When I first heard of a crowd-funded game, I assumed it would be open source and was surprised to find it wasn't. Glad to see it's starting to happen and hope they meet their target. I'll definitely be throwing a few dollars their way!
With a Kickstarter all-or-nothing approach I can be quite generous (I'd probably go for the $100+ option here), safe in the knowledge that if nobody else offers any funding then I won't be the only one chipping in.