They Bleed Pixels
Potential Linux/Mac/Other platform ports
I just emailed the developers regarding the game and it's current state on other platforms, this is the response I got.

Thanks for emailing, glad your loving the game so much! We are planning on doing a Linux (and Mac) port. We're currently busy fixing up some final things on the PC build before starting the port. As you mentioned the current one is built in XNA so the port will take some time and we can't say when the LInux version will ship just that it's something we really want to see happen.

We'd love to get it on a portable as well and are looking into possibilities, if/when we have concrete news we'll make an announcement!

Cheers,
Miguel