• 8 years ago
Development of Dota 2 began in 2009 when IceFrog, lead designer of the original DotA mod, was hired by Valve. Dota 2 was praised by critics for its gameplay, production quality, and faithfulness to its predecessor, despite being criticized for its steep learning curve. Dota 2 utilized the original Source engine until it was ported to Source 2 in September 2015, making it the first game to utilize the new engine.[5]

Dota 2 has a widespread professional scene, with teams from across the world competing for prize money and glory in various competitive leagues and tournaments. The largest of the professional tournaments is known as The International, which is hosted by Valve and takes place annually at the KeyArena in Seattle, Washington. The 2015 edition of The International set a record for having the largest prize pool in eSports history, totaling over $18 million.[6] Starting in 2015, Valve also began sponsoring smaller, but seasonally held tournaments known as the Majors, the first of which was held in Frankfurt, Germany.[7]