For Linux users: both the demo and release worked fine for me with proton: GE-Proton7-41. But should probably work fine with normal Steam version.
To unzip it (seems that it was zipped with some "interesting" software, because it hardcoded the / to be \, which only Windows uses?
unzip dice-win.zip -d "game directory"
To launch the game:
Proton path run game path
Ex:
/usr/bin/proton run SliceDice/SliceAndDice.exe
Remember to allow the .exe to run as a program
Happy dicing!