The Collective are a machine-worshipping faction in Warzone 2100 that serve as the main antagonists throughout Campaign 2. They began launching attacks on Project Team Beta on NEXUS's request.
During the campaign, it is discovered that the Collective are searching for NASDA Central (as well as a nuclear power plant to provide power to it) in order for NEXUS to take control of its systems. Once NEXUS tookcontrol of the NASDA Central, however, it proceeded to launch nuclear-armed cruise missiles at Alpha and Beta base in an effort to wipe out the Project. While the Collective tried to prevent Team Beta from escaping the Eastern Sector, they were unsuccessful, and were presumably wiped out by the ensuing nuclear explosion.