Kanes Wrath is a stand alone expansion but there is alot to offer. With the exsisting 3 factions GDI,Brotherhood of N.O.D. and the Alien scum race The Scin. There are now 2 extra side factions to coinside with each major faction. Each side faction specialises in certain areas much like Command and Conquer:Generals on PC. Example,The Black Hand of NOD specialise in flame so they are able to get a special napalm upgrade for their flame units. The introduction of mega units to each side is very much an awesome welcome to Kanes Wrath along with the new Control Stick.