Decided that I wanted to have a shortcut on my desktop to start up my most recently played Steam game. Hopefully a non-horrific implementation of that?
Run config.exe, fill in the fields and press save!
You'll need your steam web API key and your steamid
Create a txt called key in the same folder as the executable and paste your steam web API key key into it.
Edit data.txt and replace the value of "steamid" with your steamid.
Run the exe! It should work. A shortcut to your most recently played game should be created on the desktop.