Forged Alliance is a stand-alone expansion to the critically acclaimed RTS game Supreme Commander. The game adds a brand new alien race, the Seraphims, who have come back from outer space to wreak havoc on humanity. One campaign had been added, and the gameplay of the three existing factions has been significantly reworked.
After all the battles that took place the climate has changed drastically and the planet was taken over by the UEF. Now many years later the Scientists were evacuated after first contact with the enemy.