Command & Conquer 3: Tiberium Wars

From Wikipedia

Command & Conquer 3: Tiberium Wars is a real-time strategy video game developed and published by Electronic Arts for the Windows, Mac OS X and Xbox 360 platforms, and was released internationally in March 2007. The direct sequel to the 1999 RTS title Command & Conquer: Tiberian Sun by Westwood Studios, a now defunct company that was taken over and liquidated by EA in 2003, Tiberium Wars returns the Command & Conquer series to its roots in the Tiberium story arc of the franchise, once again featuring the factions of the Global Defense Initiative and the Brotherhood of Nod, and also introducing a new extraterrestrial faction known as the Scrin. An expansion pack to Tiberium Wars, titled Command & Conquer 3: Kane's Wrath, was released on March 24, 2008.

Tiberium Wars takes place in the year 2047, at the advent of and during the "Third Tiberium War" when the Brotherhood of Nod launches a worldwide offensive against the Global Defense Initiative, abruptly ending 17 years of silence and crippling GDI forces everywhere. With the odds tipped in the Brotherhood's favor this time, GDI field commanders rally their troops and begin to combat Nod's second re-emergence, trying to restore lost hope. In the middle of it all, a new playable faction of extraterrestrials appears: the Scrin.