You're welcome!

Well, I'm running my laptop at 1400x1050~, when the game starts it doesn't use that resolution but instead runs at 320x200~ and the rest of the area is black, there is no scaling or anything to use the full resolution of my laptop's screen.

Thing is, I'm on GNU/Linux. Thanks for the tip on how to exit the game.

I can't play the game in full resolution, I'm locked at 300x220 or something like that. There is no in-game menu , and there is no exit button so you are locked in the game if it plays fullscreen (something you cannot control neither)