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. 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. 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.
