IceFrog is a game designer, known for being the longest-serving and current developer of the Warcraft III custom map Defense of the Ancients. He is currently employed by Valve Corporation as the lead designer for Dota 2, the stand-alone sequel to the original scenario. IceFrog's involvement with DotA began in 2005, when he inherited the reins of the dominant variant entitled DotA Allstars from Steve "Guinsoo" Feak. Since the beginning of his involvement, IceFrog has added many features, including heroes, items and gameplay fixes. Every release is accompanied by a change log released on the official website. IceFrog is noted for his continued anonymity, having never publicly disclosed his actual name. He did however reveal that he was 25 years old on his blog on the 3rd of February 2009.
- Biessener, Adam (2010-10-13). "Valve's New Game Announced, Detailed: Dota 2". Game Informer.
- Dean, Paul (16 August 2011). "The Story of DOTA". Eurogamer.
- IceFrog. "Latest DotA Changelog". GetDota.com. Archived from the original on 2007-08-30.
- Waldbridge, Michael (2008-05-30). "The Game Anthropologist: Defense of the Ancients: An Underground Revolution". GameSetWatch. Archived from the original on 2009-04-17.
- IceFrog.com: Q&A Session #2. http://www.playdota.com/forums/blog.php?b=62
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