Congratulations! I've just watched the video and immediately clicked the download button on the demo, I've had a quick play on it too and it's really well done. It kind of has a LBP feel to it. One thing I might add is that I don't think gaming is big on Mac (I'm a Mac owner, and I'm into games but I don't combine them, maybe Minecraft from time to time but that's about it.) – Have you thought about other platforms or what distribution channels you want to release this on? It might work out really well on Steam.