Defense of the Ancients started in 2003 as a custom map built inside Blizzard's Warcraft III world editor by anonymous, unpaid modders. It went on to spark a multi-million dollar legal war between Blizzard, Valve, and Riot Games, rewrite how the industry treats user-generated content, and spawn the MOBA genre and a global esports business. This episode traces the fragmented lineage of DOTA from the StarCraft map Aeon of Strife through Eul, Guinsoo, Pendragon, and the reclusive developer known only as IceFrog.

We unpack the mechanics that made the game so addictive, including last hitting, denying, the item recipe system, and a boss monster named after a bowling ball. We also look at the community's makeshift infrastructure, from third-party LAN emulators to vigilante ban lists that made the game notoriously hostile to newcomers, and how tha ...