Rats named Carmack and Romero are playing Doom

Using animals for these types of experiments is not something I approve of, however, combining 2 of my favorite things, rodents & Doom is something irresistible to me! I hope they eventually unplug the rats from their matrix and let them eat pizza untethered for the rest of their lives...

PC GAMER SOURCE

"I built a VR setup for rodents from scratch and trained three rats in an automated fashion, without manual intervention, to traverse a corridor rendered in the DOOM II engine," writes Tóth. "Although I did implement the mechanisms to further train rats to shoot monsters in-game, I lacked the time to actually reinforce the behavior."