Steam now offers the OS X and Linux editions of Transistor along with the previously released Windows version of Supergiant Games' science-fiction action/RPG (thanks Ant via LinuxGames). This blog post offers details on the ports:

Transistor is now out for Linux and Mac:

http://store.steampowered.com/app/237930/

The Linux version supports the DualShock 4 light bar, too:

https://vine.co/v/OM00rdtZ6LF

Documentation is already up on the PCGW:

http://pcgamingwiki.com/wiki/Transistor

This is the second time I've ported something that I previously wrote about on G+. I could get used to this.

But let's talk about the port again anyway, since I've talked about the game before. Before referring to that old post, let's talk about the overall work:

Basically, I took all the files in their MonoGame branch that referred to OpenTK, and replaced them with the FNA versions of those files. That's about it. Most of the files never changed, and the FNA files that replaced the OpenTK files went through minor changes to line up with the internal APIs (primarily, fixing things to work under the XNA 3.1 spec, but not actually changing any functionality). For the actual game it was mostly the obvious set of changes, like save paths, and very little else. I made a couple changes so my very old Mono compiler would be happy, but those changes aren't relevant in the shipping version since the C# assemblies you're playing with are built by VS2012, primarily to ensure accuracy in the assembly output.