Usurpation

Usurpation is the first scenario of the Suryavarman I Campaign in Age of Empires II HD: Rise of the Rajas. It is about how Suryavarman I leads his forces to conquer Angkor and claim the throne from his rival king.

Ally

 * Local Inhabitants (Khmer) are located to the south. They have a Market that can be used as trading partner once the hostile troops around the trade route are eliminated.

Enemy

 * Udayadityavarman's Army (Khmer) have military bases located to the northwest, south, and southeast. They also have a Market to the easternmost used for trading with Udayadityavarman. Their army consists of Spearmen, Men-At-Arms, Archers, Skirmishers, Scout Cavalry, and War Galleys.
 * Angkor (Khmer) are located to the north. They have a large base surrounded by Stone Walls. Their army consists of Light Cavalry, Battle Elephants, Long Swordsmen, Pikemen, Elite Skirmishers, Crossbowmen, and Monks.
 * Udayavidityavarman I (Khmer) are located to the north, inside Angkor's Walls and Gate. They have a Castle protected by Pikemen, Battle Elephants, and Ballista Elephants. King Udayavidityavarman I lives inside the Castle.