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Pretty obvious, wasn't it? They're putting on a big show, trying to scare us. Means we're getting under their skin. That's a good thing. Of course, now it looks like we've got a big Death Ray thing we need to take down before they blow up the whole damn planet. But it's nice to know we're having an effect, don't you think?Somah

The Death Ray control is a location on board Mothership Zeta. It is a single large room serving as the control center for Zeta's death ray.


There are four power generators in the corners of the room, which have to be destroyed as a part of the quest This Galaxy Ain't Big Enough.... The Death Ray itself is visible beneath the glass floor. The room has two teleporters leading to the living quarters and the Death Ray hub area.

The Death Ray can be fired from this room by using the buttons on the two consoles. The two buttons on the right aim the Death Ray to one of two pre-targeted locations. The buttons on the left (as the holographic "signs" appearing above them signify) bring one of the four generators out of the floor (button to the extreme left) and fire the Death Ray (second button from the left).

The generators rise out of the floor in sequence around the room starting at the left of the consoles. It apparently only takes one generator to power the Death Ray, as the other three do not rise when the Death Ray is fired (and the Death Ray will fire with only one generator left).

The Death Ray can be re-aimed at an unspecified target on Earth and fired multiple times, producing a spectacular mushroom cloud. Firing the Death Ray at Earth has no effect on Karma, or on the game itself.

Related quests


  • This is one of many areas of the ship that will not be accessible after the player has completed the main (This Galaxy Ain't Big Enough...) quest.
  • After two generators in this room are destroyed, approx. 5 aliens will appear from the teleport pad in the corner opposite to that generator.
  • When all 4 generators have been destroyed, the force-field door to the Living Quarters is opened.
  • The player can fire the death ray multiple times at the same place and the crater gets no deeper, but dust still flies around the general area.


Death Ray control appears only in the Fallout 3 add-on Mothership Zeta.