Skip to content
Getting the Yellow Key (3)
Duke Nukem 3D

Getting the Yellow Key (3)

Find the Yellow Key in Duke Nukem 3D by entering the code O X O. Includes enemy locations and item pickups.

By ···10 min read·Multi-source verified
1 reading this guide  

Find the Yellow Key in Duke Nukem 3D by entering the code O X O. Includes enemy locations and item pickups.

Walkthrough
  1. 1
    Enter the cart, which contains some Troopers (an enemy type). Hit the switch inside to travel to the other side.
  2. 2
    On the other side, you will find another Trooper and two Small Medikits (items that restore health).
  3. 3
    The door at the end of this area contains Devastator Ammo (powerful ammunition). Another door leads to a red room.
  4. 4
    In this red room, be alert for various Sentry Drones and Troopers.
  5. 5
    A portion of the room is closed off by two walls. Near the left wall, you can find a Large Medikit, and near the right wall, a Small Medikit.
  6. 6
    In this room, you will find Shotgun Shells (ammunition) and Shrink Ray Ammo (ammunition for a specific weapon) on top of a switch panel.
  7. 7
    The switches conceal a Yellow Key. The code to reveal it is O X O.
  8. 8
    After obtaining the Yellow Key, proceed through the door at the end of the room. This door contains two Enforcers and an RPG (rocket-propelled grenade launcher).
  9. 9
    Warning: Entering this room will cause two more Enforcers and a Sentry Drone to spawn in the red room.
  10. 10
    There is also an elevator near the Yellow Key. Taking this elevator will lead you to three Atomic Health pickups (items that significantly restore health).
Tips
  • Be prepared for multiple enemy encounters in the red room.
  • The elevator near the Yellow Key offers a significant health boost.

100% Human-Written. AI Fact-Checked. Community Verified. Learn how AntMag verifies content