Valve's real-time action game, Dota 2, broke its own record for the most concurrent users in history on Steam since its own record in March.
Dota 2, which is still in beta, registered a peak of 329,977 players on Saturday. That day coincided with Dota 2's West Qualifier for The International tournament, which ran from May 13 to 19.
Last March, Dota 2 registered 297,000 players, breaking The Elder Scrolls 5: Skyrim's record in 2011 by nearly 10,000 users. A graph depicting Dota 2's growth in comparison to Skyrim can be viewed here.
Dota 2's The International tournament's East Qualifiers are underway, running from May 20 to 26, with the main tournament taking place on Aug. 7. Valve released The International Interactive Compendium, a virtual book to keep players filled in on tournament events, and is on sale in the Dota Store for $10 each.
Dota 2 isn't tagged with an official release date as yet, but interested parties can sign up on the official website to join the beta's invite waiting list.