Failed Experiments are hostile undead creatures in The Elder Scrolls IV: Shivering Isles, and are typically found at the ruin of Xaselm in Mania. They are the failed tests of the sorceress Relmyna Verenim in her attempt to create the Gatekeeper for her master, Sheogorath. The failed experiments are very similar to zombies, their counterparts in Cyrodiil.