I think you got it, no other possibilities.
[POS]katiehal16 [author] Jan 24, 2013 @ 7:12am
Hello Linux fans! Thanks for the posts & upvotes!

We really do want to port to Linux! One of the biggest reasons we haven't yet is that Linux support was only recently added with Unity 4, but we're still working inUnity 3. Once we upgrade to the new version, making that port will become *much* easier. That upgrade will happen at some point, it's just a question of when.