The game features a new faction, Angmar, bringing the total number of playable factions to seven.

Force Recon is also a playable faction in the online multiplayer.

In the original concept, each of the game's three playable factions would have been led by a different 'Ozzy character'.

The game is set in the 23rd century whereby the players undertake the one of several roles across four playable factions.

There are currently eight playable factions in the game of allegiance:

In the middle of it all, a new playable faction appears: the alien Scrin.

There are a total of four playable factions in Earth 2160.

They are a playable faction during two levels (not including a third where the player can control a few naga units).

There are two playable factions available in this game, the Confederacy and the Union (although foreign intervention is a possibility).

They have since been expanded into a playable faction in the game's expansion packs: