Anti-gravity device

An Anti-Gravity Device was acquired and utilised by a Dalek as it fought to escape the Vault, enabling it to pass over manholes as well as to ascend or descend its way through flights of stairs. (NOTVALID: The Last Dalek)

Behind the scenes
The Anti-Gravity Device was identified in the video game The Last Dalek, based on TV: Dalek. It was acquired in Level 3.