Nameless Storm [Co-Op mode]

Scattered across the land, scouts begin to observe new, uncompleted machines everywhere that cannot be hacked by the Controllers. All of the other robots encountered so far are created by the same ancient machines that existed when mankind left Earth long ago. The old machines do not evolve, so their robot progeny can be hacked easily.  These new, unhackable machines could just be bugs in the system... or perhaps something far more serious. The 4 enterprises each begin to investigate the phenomenon.

After a month, their nightmare comes true: unknown machines invade, capable of flight and fully armed. They target robots and buildings alike, determined to destroy any foreign presence. Recognizing the greater threat, the 4 enterprises sign the Armistice Accord, agreeing that they need to unite, sharing resources and information to fight as one against the unknown enemy. They will likely become exponentially stronger over time, which leaves only a brief window to take back control of Earth before our homeworld is lost forever.