The title "Titans" refers not to the new gods, but to the Titans you can build and control in the game. Each culture can now build an ultimate unit, a massive brute with thousands of hit points that is also extremely expensive, with prices approximating a wonder. But when they are finished, they are nearly impossible to destroy without a Titan of your own. You can build only one, but one is pretty much all you need. Each culture has a unique titan. The Atlantean Titan looks like a giant humanoid made of rock and lava, while the Greek Titan is a huge man with three dog heads resembling the guardian of the Underworld, Cerberus. The Egyptians have a hawk-headed man, while the Norse have a mammoth troll wielding an icy hammer.

In addition to the titan units, new major and minor gods as well as heroes and myth units join the game in the Titans Expansion.