I'm going to be honest, I didn't thought anyone was going to come back to this game due to it being a mere playtest version, but I'm am so happy that you have. I'm happy to know that the improvements to the game are satisfactory and people are enjoying it because it is coming close to the planned public version. Thanks for the kind words.
As for the issue of the window screen, I have gotten complaints about it. I can't change the resolution at this point unless I do an overhaul of the entire game, so instead I'm going to give the option to allow the window to be full screen and to resize the game window. Hopefully that should fix it to those whose game goes over the screen.
Once again, thanks for the compilment on the game.