Doom Hides These Awesome Throwback Secrets for Series Fans

Wolfenstein: The New Order featured an Easter egg that let you play levels of Wolfenstein 3D with The New Order's weapons, and now Doom has its own twist on its classic predecessors.

Id Software executive producer Marty Stratton and creative director Hugo Martin revealed to IGN that every mission in Doom contains a classic map from the original two games. All you have to do is find each mission's hidden lever and pull it. Once activated, a jingle will play and a door will open to a stub of a classic level.

"You get to play them with new guns and new demons, but you'll notice that in the ones that include demons, they're actually in the right places," Stratton said. "We have classic pickups [and] some of the classic music is included in a few of them."

The classic level revealed in the video is E1M2, and Stratton says once you find a hidden classic map, you unlock the full version of it that can be accessed from the campaign menu.

Stratton and Martin joined GameSpot for a Doom single-player livestream, in which they talked to us about the game and its intense difficulty mode, Ultra-Nightmare.

Doom hits the PS4, Xbox One, and PC on May 13.

Doom's multiplayer beta on PC received some flak for its capped frame rate and lack of other features. Id Software's CTO, Robert Duffy, addressed the feedback and detailed some of the advanced settings that might appear in the final game.

You can check out Doom gameplay in the links below:

• Gore Nest Slaughter Exclusive Gameplay
• 12 Minutes of Single Player UAC Base Exclusive Gameplay
• Berserk Mode Gameplay
• 15 Minutes of New Hell Gameplay
• 6 Minutes of Warpath Mode Gameplay