How to find the secret level of Wolfenstein 3D in Wolfenstein the new order
They had done something quite similar already with Rage, but this time the lords of Id Software went a little deeper.
How to discover the secret level of Wolfenstein 3D
About a third of the way through the game (it should be Chapter 4, after finding Anya) in the secret base go upstairs using the stairs. Passing through the tool room, keep walking to find a corner with old mattresses on the floor (you should also see a poster of the Wolfenstein orifinal !!!).
Using the button to interact with the mattress, you will end up directly in the nightmares of the protagonist BJ, or a playable level of the original Wolfenstein 3D complete with "vintage" graphics.
Watch the video below to see exactly how and have fun.
Important: consult the Wolfenstein the new Order cheats and guides tab for other useful guides on this game.