Currently only Windows, Mac, and Linux. I don’t think there’s any point in planning anything else this early in development, but we’ll see where things take us!
The game is currently being developed in the MonoGame framework, in C#, on Windows. So far it’s been pretty nice! Later on we’ll try getting it up and running on Mac and Linux, but that should be reasonably straight forward (easier said than done, but MonoGame should make it a reasonably clean port)