Defense of the Ancients (DotA) is a renowned multiplayer online battle arena mod for Warcraft III, blending strategic gameplay with intense team competition. Players engage in a battle to destroy the opposing team's Ancient while controlling powerful heroes, each with unique abilities. The game emphasizes teamwork, with players leveling up their heroes and acquiring equipment through in-game currency, adding layers of strategy and depth to each match.

Originally developed using Warcraft III's World Editor, DotA has seen various iterations, with DotA Allstars being one of the most popular. The mod has gained immense popularity in the esports community, featuring in major tournaments worldwide. Its influence on the MOBA genre is profound, paving the way for future titles like Dota 2. DotA's engaging gameplay and competitive nature continue to captivate players, making it a staple in online gaming.