Not sure if this is the right board for this (i was about to post in Help, Suggestions & Feedback, but wasn't sure) , but I have a high res monitor so playing fangames in which don't allow window re-sizing is really difficult and straining on my eyes. Luckily I just stumbled upon this neat little tool that when ran it lets you resize any window.
here is the download link
https://www.digitallis.co.uk/pc/downloads.html (its the one called resizeEnable)
hope it works for you, I am on windows 8.1 and it works great for Not Another Needle Game for reference