So I purchased Airline Tycoon Deluxe Edition and installed it onto my Mac. Everything seemed to be going well until I started the game. The game doesnt open in fullscreen mode. Its a little square in the left lower corner. There are no options in the game to go to fullscreen mode. I closed the game and restarted my laptop to see if that would fix it. It didnt. Anyone else have this problem or know how to fix it. Thanks in advance.

I can't believe I'm saying this, but I never had this problem in windows.

...but I would guess this is some sort of forced aspect ratio problem.

Since it works via dosbox, you might try playing with the content of its conf file in the game folder, in particular the sdl section.