In a patch update could you add a key to exit the game back to workbench. The only way to quit the game seems to be to reboot. Apart from this very minor issue its a fantastic game.
Thank you so much for your kind words. The game is prepared to handle exit to WB. I decided to disable that function as to avoid potential issues with some exotic WB setups. You could always use the WHD-client to add that functionality.
