Burmese
Ascend to power, quash a treacherous rebellion, and restore the Burmese monarchy to its former glory. Assemble the largest empire in the history of Southeast Asia through a legion of Battle Elephants that can demolish the most powerful of defenses. The Burmese unique unit is the Arambai, a ranged cavalry unit with a deadly but low accuracy attack.
Khmer
Overthrow the king of Khmer, build strategic alliances, and settle the score with your historic rivals. Construct the largest religious monument in the world and amass an immortal army of devastating siege weapons. The Khmer unique unit is the Ballista Elephant, a mounted scorpion that can be upgraded to fire two bolts simultaneously.
Malay
Restore the king to his rightful throne, defeat his oldest enemies, and unite Malay’s people under the leadership of the wise Gajah Mada. Conquer Southeast Asia with the vast island empire of Malay and upgrade your docks to harbours which can shoot arrows. The Malay unique unit is the Karambit Warrior, an extremely cheap infantry unit that can quickly overwhelm its foes.
Vietnamese
Command the rebellion against the Chinese Ming Empire and become a hero to the Vietnamese. Lead your people to independence through waging guerilla warfare with an extremely powerful arsenal of ranged units. The Vietnamese unique unit is the Rattan Archer, a heavily-armored ranged unit that is effectively impervious to enemy archer attacks.