Making Doom run on weird things seems to be a strange pastime of some people. Hackers have made Doom playable on an ATM and an Inkjet printer , but now they have figured out the holy grail of Doom , Doomception . Yes, now you can play Doom , in Doom . By going up to an arcade machine inside Doom , you can load up an entirely separate instance of Doom and play it no problem. You can also load up other games such as Wolfenstein 3D . It’s unclear as to whether or not you can then play Doom , inside Doom , inside Doom .
How deep does this rabbit hole go?
Source: GameSpot