The invader's forces lay waste to many of the UEF's main worlds, killing billions, and thanks to the QAI, the Seraphim are able to launch many devastating battles against the Cybran, crippling them as well. The return of the Seraphim prompts a schism within the Aeon Illuminate, dividing it between those who remain loyal to the old leaders of the Aeon and those who choose to side with the Seraphim. Meanwhile, the Black Sun fires, weakening the barrier enough for the Seraphim to open a rift in the barrier that previously existed between the Quantum Realm and the galaxy. Shortly before the Black Sun fires at the end of Supreme Commander, the leader of the Seraphim contacts the central AI, or "Quantum AI," of the Cybran and reprogram it to spy on Dr.
![supreme commander forged alliance seraphim supreme commander forged alliance seraphim](https://i.ytimg.com/vi/ksbZpcCP6TI/maxresdefault.jpg)
Instead, the Seraphim had retreated to the Quantum Realm to plan their invasion. The Seraphim are a species of aliens that humanity first encountered during the Old Empire's "Golden Age." They taught the first colonists that made contact their belief system, called "The Way." Unfortunately, due to paranoia that built within the empire, an order was made to attack and destroy the Seraphim and shortly thereafter, the Seraphim disappeared from the Galaxy, presumably wiped into exctintion by humanity. Unlike the old missions, these new missions can be played by any of the 3 races with all units unlocked from the first mission. This Expansion pack adds an entirely new campaign in which the 3 existing factions make a fragike alliance in order to battle this new enemy. The core elements of the game remain intact, but players may have to adjust to the revisions and balancing changes that have been introduced in this title.
![supreme commander forged alliance seraphim supreme commander forged alliance seraphim](https://www.videogamesblogger.com/wp-content/uploads/2008/01/supreme-commander-forged-alliance-screenshot-big.jpg)
In addition to the arrival of the Seraphim, each of the original races has received a new experimental unit, bringing the total for each race to four.
![supreme commander forged alliance seraphim supreme commander forged alliance seraphim](https://vignette.wikia.nocookie.net/supcom/images/5/51/CybranSCU.jpg)
The most significant addition is the introduction of the Seraphim, a race presumed dead in Supreme Commander, but teased at resurfacing after the events at the end of the first game. Many of the aspects of Supreme Commander remain the same, but there have been tweaks to certain units, including changing costs and damages or changing which "Tech" level they first appear, in order to balance the game. It is a direct sequel to Supreme Commander, picking up immediately after the events at the end of the previous title. Supreme Commander: Forged Alliance is the first stand-alone expansion pack to 2006's Supreme Commander.