alt+enter
did not go full screen, is there something wrong with the game or my laptop?
try first clicking on the window of the game and then pressing the combination, otherwise i got no clue. :(
however you could download external programs for stretching windows, i used that but it makes the images jaggedy and hurts eyes, plus you might catch a virus, if you do consider trying this method - please check all programs through virustotal.
