Age of Wonders III is a 4X turn-based strategy video game set in a high fantasy fictional setting, where players take the role of a leader to explore the world, interacting with other races and kingdoms, both diplomatically and through warfare while progressively expanding and managing their empire. It is the fourth game in the Age of Wonders series, following Age of Wonders, Age of Wonders II: The Wizard's Throne and Age of Wonders: Shadow Magic released in 1999, 2002, and 2003 respectively.

The game features a new graphics engine for the series, in addition to an updated soundtrack. The gameplay has also been updated, featuring a new role-playing style leader class based system and interchangeable choices of strategy and appearances for each playable race. It also supports online and local multiple player modes and a level editor along with a new story driven single player campaign mode.