The original DotA mod for Warcraft III is released, creating the foundation for what would become DOTA 2.
Valve officially announces the creation of DOTA 2, a standalone sequel to the Warcraft III mod.
Valve hosts the first major DOTA 2 tournament The International, with a $1 million prize pool.
DOTA 2 becomes officially available to the public via the Steam platform.
TI5 features the largest prize pool in esports history at the time, over $18 million dollars.
TI8 becomes the highest prize pool esports event ever with over $25 million awarded.