it won't update properly can someone help me- it just keeps downloading the old file over and it's not updating for Nightmare Mode
Go to the top of the page and you'll see a banner that says "You own this game" - click the nearby Download button. If you're using windows, download "That's Not My Neighbour.exe" (not version 1.0.3.3!), and drag it into the folder where your previous version is - windows will ask if you'd like to replace it, say yes.