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Engineering Core: Misc



Up to date as of February 01, 2010

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Engineering Core

inside: Mothership Zeta
connects to: Bridge
Cargo Hold
Cryo Lab
Decompression Chamber
Engine Room
Maintenance Level
Observation Deck
Robot Assembly
quests: Not of This World
Among the Stars

The Engineering Core is a location on board Mothership Zeta.



The Engineering Core is the third area that the player encounters aboard the Mothership, and serves as a hub between numerous other locations aboard the ship, including the Steamworks, Hangar, Cryo Lab, Robot Assembly, and Engine Room. Here, the player can also find several other captives who will assist the player aboard the ship. As the player progresses through the Mothership Zeta quest, the Engineering Core changes. Defenses are put up and barricades are made by the other captives; eventually a broken Nuka-Cola Machine will show up; a Teleporter to the Bridge appears near the Steamworks entrance, down a corridor to the left of the Nuka-Cola machine; and a terrified alien will appear and plea for life, only to be shot by Paulson.

The Engineering Core is one of the few rooms still available to explore after This Galaxy Ain't Big Enough... quest is complete, as most other rooms beyond it will become inaccessible. At this point, aliens will also begin to spawn occasionally in the room.

Home Away from Home

Engineering Core is an excellent place to store items worth keeping but that the player doesn't wish to always have in inventory, and is much safer than using abandoned houses in the Wasteland. Aliens do not steal items, so leaving unique weapons in cases or even on shelves comes with no risk of thievery. It has more than one bed and an alien workbench. This is useful after the This Galaxy Ain't Big Enough... quest is complete and the player is given control of (parts of) the ship. The ship is simply an alternative and only for aesthetic purposes.

Notable loot

  • A Buttercup Toy on the table near the windows, and on the floor above, near the powered down teleporter.
  • After the quests have been completed, two Aliens can be found here, wielding an Alien Atomizer and Disintegrator, along with Alien food/ammo. They respawn every few game days. This can be a good way to to replenish your supply of Alien Power Modules. ( Xbox 360 and Pc confirmed ).
  • In the hall leading to the Engineering Core's lower floor there is a Chinese Commando's hat.
  • 26 Alien Power Cells can be found here in a box along with a Nuka-Cola Quantum and three turpentines. This crate appears near the Alien workbench after exploring all of the rooms branching from the Engineering Core and destroying the generators or after performing the spacewalk.
  • 2 Nuka-Cola Quantums appear in a crate with a Nuka-Cola next to a generator and rusty tricycle after exploring all of the rooms branching from the Engineering Core and destroying the generators.
  • 1 Mini Nuke appears in the chair next to the workbench in the room that leads to the Decompression Chamber after exploring all of the rooms branching from the Engineering Core and destroying the generators.


  • Loot in the Engineering Core appears in stages, depending on how many generators the PC has destroyed. For example the Buttercup toy only appears after destroying two generators or more.
  • In the room with the Makeshift Bedding, the footlocker on the far right when looking out of the windows into space is a safe place to store items.
  • The main area bears a striking resemblance to the a warp core in the Star Trek series.
  • As you walk up the stairs above the bedding if you look down when you reach the top you can see a miniature drone holding a teddy bear
  • If you have the Child at Heart perk, right after thawing the cryotubes, talk to Sally. You will get the option to ask Sally if she has "any good stuff hidden away". She will immediately lead you to a room that is closed off by the teleporter to the bridge. In there are three containers full of alien items. This is also a great place to store things if you're becoming over encumbered, so that you can collect as much Alien gear as you want. HOWEVER, if you talk to Sally while she's leading you to the room, she'll stop and talk to you, and she won't open the room. The dialogue option will not come back, and everything in that room will be lost to you unless you're on the PC with noclip.
  • Sitting on a box at the top of the stairs is a teddy bear holding a beer and wearing brass knuckles.


Engineering Core only appears in the Fallout 3 add-on Mothership Zeta.


  • A floating turpentine can be found in the room where the captives wait for you near the door at the bottom of the stairs (Xbox, confirmed on PC). It is supposed to be on top of the generator that appears here later.
  • The teleporters on this deck may stop working, while displaying the appearance of a fully active teleporter; attempts to activate them only result on a no interaction tone. This can be a fatal game glitch permanently trapping the player on the ship. as a precaution one should save on the bridge before returning to the engineering core. (Confirmed 360,PS3)
Mothership Zeta (add-on)

This article uses material from the "Engineering Core" article on the Fallout wiki at Wikia and is licensed under the Creative Commons Attribution-Share Alike License.


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