When I launch the game it defaults to some fucked up giant resolution that causes my first monitor to give me an "input not supported" error. Second monitor shows everything just fine but unfortunately the parts of the menu screen that are shown on the second monitor aren't enough to allow me to change the resolution to something manageable. I really want to play the game but I can't get this to work. Any ideas?

That's an interesting problem! I think I know what's going on. The game was never tested for multiple screens, but it tries to guess the highest available resolution the first time you run it, and launch into fullscreen... So I think it's not understanding that you have two monitors. Unfortunately, I'm not able to patch the game any more.

But! Here's a work-around:

• Run the game at least once, Alt-F4 if you need to. (You've already done this part)
• Grab this file: https://drive.google.com/file/d/18qKajbgSdXXZS8LmQ7V0vrIc7gvGjp4M/view?usp=shari...
• And paste it here: C:\Users\YOUR_USERNAME\AppData\Local\Interactivity_v2\Saved\SaveGames\
  OR if you're using the itch.io client in sandbox mode, paste it here: C:\Users\itch-player-XXXXXXXX\AppData\Local\Interactivity_v2\Saved\SaveGames\
  (where c:\Users is wherever your user folders are, and XXXXXXXX is a code)
• Restart the game - it should now launch in a 1280x720 window.

Let me know how it goes! :-)

Worked like a charm, thanks :)