Fall of the Space Core is a mod for The Elder Scrolls V: Skyrim that adds the Space Core from Valve Software's Portal 2 into the game as part of a rumored Portal 2 quest. It will fall from the stars and crash land in a fireplace located in a ruined house near the Western Watchtower. What sets this apart from other mods is that this mod was created by Valve Software themselves to celebrate the release of Skyrim mods becoming available on the Steam Workshop.

The Space Core itself can be used to make the Dovahcore Helmet, and speaks random quips it said in Portal 2, often pertaining to space or other related things.

• "Help me, space cops, space cops help!" (said upon pickup)
• "Dragons...DRAGONS! Space space..." (unique to Skyrim)
• "Archery... Hrm. Smithing... Hrm. Don't need 'em. Go to space... only skill you need."