It has been ages since I've done anything game related, but saw that the screen size didn't work as intended. My hope was that you'd be able to drag the window to whatever size you wanted, but it clearly didn't happen. And for any of you still playing my game after all this time, I apologize!
I've changed the game back to a previous iteration to fix this. The game is now played at a fixed resolution (640x480px I think), so twice the actual size. It might not be perfect, but it should be a lot more playable now.
Again, I'm sorry for taking so long addressing this!