Teletext. Notepad. Twitter. A tractor. A pregnancy test. There have been few limits to the weird and wonderful ways that enterprising Doom fans have found to play the seminal FPS over the last 30 years, but this latest one might take the crown for both weirdest and wonderful-est. Someone is teaching a bunch of lab-grown rat neurons to play Doom. Yes, their literal conscious existence is Doom. I told you it was weird.