Sub-factions
Each of the three factions featured in Command & Conquer 3: Tiberium Wars (Global Defense Initiative, Brotherhood of Nod and Scrin) have received two additional "sub-factions" in Kane's Wrath; a gameplay concept previously used in Command & Conquer: Red Alert, Command & Conquer: Red Alert 2 and Generals – Zero Hour. Each of these sub-factions feature unique special units, upgrades and support powers, and are designed to cater to more specialized styles of real-time strategy gameplay. This sub-faction system brings the total number of playable sides in Command & Conquer 3 from three to nine. Additionally, the three main factions receive some new units and upgrades.
Read more about this topic: Command & Conquer 3: Kane's Wrath, Gameplay