We stuck our Rage review up yesterday but we didn't find out about this little secret until afterwards. id Software has nestled a treat deep within its latest shooter, Rage, for any old-school FPS fan.
It's an uncharacteristically bright and pixelated doorway leading to a Wolfenstein styled cubby-hole.
The gem can be found in the Ghost Hideout section of Rage when you first enter the area. Just hit action on the wall as shown and the world of Wolfenstein 3D will open up to you.