I'm on Mac, there doesn't seem to be a way to Quit the game, especially when in full screen. Hitting ESC does nothing, and there doesn't seem to be a way to pause either. I eventually figured out R exits to the menu, but there is still no way to Quit the game entirely. I had to Alt+Tab out of it, then quit from the dock. Otherwise this was fun, though I did find some of the adjectives weren't obvious which business I should be heading to. Fun trying to figure it out!