The Indians bring Choose-One Techs onto the battlefield, which is a unique mechanic that allows them to choose one of multiple powerful upgrades that can greatly improve their army and economy.

They also have access to Gatherer Elephants - a specialist worker unit that gathers resources much faster than Villagers, but cannot repair any buildings and can only construct Plantations, which is a unique Indian Farm that can be utilized by more than one gatherer.

In the lategame, you have access to Juggernauts which are extremely powerful but also extremely expensive armored Elephant units that can dominate any fight, but are very costly to replace if lost, and also vulnerable to enemy Priest units.