Good news to the penguin crew! Linux version of Stardust Galaxy Warriors has now been made available to download!
We have tested it on 64-bit Ubuntu 14.04 with Intel and Nvidia hardware (with Nvidia proprietary drivers) and it has worked as well as the other versions bar a few graphical glitches. If you encounter issues with the version, please let us know in the discussion area and we'll try to figure out what might be causing them.