Skeleton Key

The Skeleton Key is a unique item developed by Dr. Shen in XCOM: Enemy Unknown. It allows XCOM to gain entry to the recently discovered alien base on Earth.

In-Game DescriptionEdit

This device is the culmination of our research into the shard recovered from the alien Outsider. It should allow our troops to infiltrate the alien base and find out what's inside.

– Engineering description, XCOM: Enemy Unknown

Production RequirementsEdit

Prerequisites:  Outsider Shard (Research)
Time to Complete:  Immediate
Engineers:  15

Production Cost:

Gray Market ValueEdit

This item cannot be sold.


  • The Skeleton Key is required to assault the alien base, progressing the storyline.
  • The key can be constructed anytime after researching the Outsider Shard. If selling artifacts at the Gray Market, be sure to keep sufficient materials for the key.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.