Skip to content
Getting the Blue Key / Getting to the Blue Key Slot (3)
Duke Nukem 3D

Getting the Blue Key / Getting to the Blue Key Slot (3)

Guide to finding the Blue Key and reaching its slot in Duke Nukem 3D. Includes walkthrough for the Entrance, Snack Room, Train Carts, and Blue Key Door areas.

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

Guide to finding the Blue Key and reaching its slot in Duke Nukem 3D. Includes walkthrough for the Entrance, Snack Room, Train Carts, and Blue Key Door areas.

Walkthrough
  1. 1
    Entrance: Start on Shotgun Shells. Go down the rubble to find a Shotgun and Large Medikit. Proceed through revolving doors, eliminating two Mounted Guns with the Shotgun. Take out the trooper on the bookshelf. Pipebombs are near the revolving doors. Around the corner, find Pistol Ammo and a trash can containing a Slimer. A Small Medikit is on a magazine rack. Chaingun Cannon Ammo and a Large Medikit are on the bookshelves, guarded by Pig Cops that spawn when you approach. Search behind the register to reveal a hidden Night Vision Goggles via a lowering shelf.
  2. 2
    Snack Room: Go around the corner to fight two Pig Cops. Find Shotgun Shells on the cola machine and a Large Medikit in the adjacent garbage can. A vending machine contains a Pipebomb; interacting with the part where the Pipebomb was will reveal an Atomic Health as the machine rotates.
  3. 3
    SECRET 1: Beside each other are three XXX stands. Jump on the left one; it sinks, revealing a room with a Holoduke.
  4. 4
    SECRET 2: The large Lunar Apocalypse poster can be opened to reveal a Chaingun Cannon. Entering this room spawns two Sentry Drones in the Entrance area.
  5. 5
    Train Carts: On the wall is a Sister Act poster with a trash can beside it containing Shotgun Shells and a Small Medikit. The train cart entrances are rigged with Laser Tripbombs; use Pipebombs to destroy them. Board a cart to find items including an RPG, Chaingun Cannon, Portable Medikit, and Atomic Health. A compartment along the tracks contains a Devastator.
  6. 6
    SECRET 3: To the left of the compartment door is a cracked wall. Destroy it to find Steroids, Devastator Ammo, and an Atomic Health.
  7. 7
    Blue Key Area: The first stop is the Blue Key door. To clear enemies from the carts, move to small platforms. Systematically take out five Laser Tripbombs and a Large Medikit on the platform. Continue along the track to a platform with Enforcers; use RPG blasts to defeat them. Use the carts to jump onto this platform. The Blue Key is here on a shelf with a Freezer, Portable Medikit, and Body Armor. Return to the Blue Key door.
  8. 8
    Blue Key Door: Open the door and eliminate the six Pig Cops inside, using walls for cover. A Pistol is in the corner.
Tips
  • Use Pipebombs to safely clear Laser Tripbombs from train cart entrances.
  • Utilize the train carts to reach higher platforms and defeat Enforcers.
  • Use walls for cover when engaging Pig Cops behind the Blue Key door.

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