Thanks for including Mac and Linux, I love the "no gamer left behind" practice.
NOTE: Your Mac version is actually broken. I think I've seen this on many Ludum Dares where the .app is directly added to a .zip. If you put the .app into a .dmg disk image first, it should be protected. I'm happy to do this for it, if you're willing to share your project files.
EDIT: I fixed it without project files but it crashed at the beginning of the house level. I might give it another look tonight.