Wanna play 'Doom'? Do I have the John Deere tractor for you!

Folks, we've done it.

We've put in the work, and now we're reaping the rewards. Doom can run on anything. First a pregnancy test, and now, even a John Deere tractor. The modification also makes a provocative point about right-to-repair laws, but more importantly: It's Doom. On a tractor.

At the Def Con hacking conference in...