Many lamented that the three factions in the original, the Cybran, Aeon, and UEF, looked and behaved too similarly. We were big fans of the game when it first came out, but there's no doubt it was one of the most complex, time-consuming RTSes in quite a while, and had an unapologetically steep learning curve. If you missed Gas Powered Games' Supreme Commander when it released in February, the new expansion offers quite a few changes.
