Sorry, I got some troubles while running your game on Linux. The terminal says:
Set current directory to /run/media/mmd/USD/sag/BURD_V1.2_LINUX
Found path: /run/media/mmd/USD/sag/BURD_V1.2_LINUX/Burd.x86
Mono path[0] = '/run/media/mmd/USD/sag/BURD_V1.2_LINUX/Burd_Data/Managed'
Mono config path = '/run/media/mmd/USD/sag/BURD_V1.2_LINUX/Burd_Data/Mono/etc'
Unable to preload the following plugins:
ScreenSelector.so
Display 0 'SyncMaster 19"': 1360x768 (primary device).
Logging to /home/mmd/.config/unity3d/Awkward Silence Games/Burd/Player.log
Error loading /run/media/mmd/USD/sag/BURD_V1.2_LINUX/Burd_Data/Plugins/x86/ScreenSelector.so: libgtk-x11-2.0.so.0: cannot open shared object file: No such file or directory
Desktop is 1360 x 768 @ 60 Hz
Invalid initial resolution 1 x 1 - forcing to 100 x 100