It will then open up an explorer window leading you to the executable. Go to 'Local Content', and then click 'Browse Local Content'. This is usually found at this location:Ĭ:/Program Files(x86)/Steam/steamapps/common/ Undertale.Īnother alternative if you don't know where you've installed Steam, go to your Library, right-click on UNDERTALE and press Properties. Well, first thing's first, you're going to have to go to your local content for UNDERTALE. So, you've read this far, and you want to get to UNDERTALE's debug mode. If there's a bunch, it's already extracted. You can find this by checking for a bunch of. Note: You can skip this part if UNDERTALE is already extracted.