Yeah I found one.
Basically you install Crab Game also on Steam. Then you go in finder, and in the 'Go to' option on the top of the display' and insert the path:
/Users/*yourusernamegoeshere*/Library/Application Support/Steam/steamapps/common
And then you replace the Crabgame app (which is in the Crabgame folder) with the one downloaded here (Make sure to rename the 'Mac_64bit' app to 'Crabgame' )
Then you open steam and run Crab game.