Fullscreen is kinda broken on Linux. Also, there's a really annoying sound loop... Other than that , it's a great game! Please check out the issues with Linux though...
Also you have support for QWERTY and AZERTY keyboards, why not do DVORAK as well?
EDIT: Turns out that annoying music is not a bug but an easter egg :P won't say how it happened so I don't spoil it for others XD