Extraction

Extraction is a new game mode in Halo 4. Although it is not present in matchmaking it can be played in the custom games lobby.

Description
Your objective is to extract more sites than your opponent. When you get into a site you are able to deploy a ball-shaped device which then extracts nearby Forerunner devices. When you are deploying a ball you bring up an device which at this point remaines unnamed but it dose seem to activate the extraction device. The ball is then deployed by giving it an electrical charge to activate it. The extraction device is Forerrunner and is highly advanced.