Rats named Carmack and Romero are playing Doom | PC Gamer
Forget about the toasters, for there is a new frontier in Doom trivia: training up rodents to wander its mazes and blow away imps. Take a bow Viktor Tóth, a neuroengineer who has been puzzling over how to train rats to play Doom for the past year: and finally (kind of) did it.
Rats in Doom VR
TL;DR 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.