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Born1983 or 1984 (age 35–36)
OccupationVideo game designer
EmployerValve Corporation
Notable work
Defense of the Ancients
Dota 2

IceFrog (born 1983 or 1984)[1] is a pseudonymous video game designer known for being the lead designer of Defense of the Ancients (DotA), a custom Warcraft III: Reign of Chaos mod, as well as for the stand-alone sequel, Dota 2.[2]

His involvement with Defense of the Ancients originally began in 2005, when he inherited the reins of the dominant variant entitled DotA Allstars from "Neichus", who himself inherited it from Steve "Guinsoo" Feak.[3]


IceFrog is noted for his continued anonymity, having never publicly disclosed his identity.[4][5] In February 2009, IceFrog revealed on his blog that he was 25 years old at the time.[1] In 2010, an anonymous person who claimed to be a Valve employee wrote a blog post titled "The Truth About IceFrog", in which he claims that IceFrog had previously worked secretly on Heroes of Newerth for S2 Games before joining Valve, as well as stating his identity as Abdul Ismail.[6] A court document regarding the ownership of the Dota intellectual property from April 2017 confirmed Ismail as the identity of IceFrog, as well as his pre-Valve contributions in Heroes of Newerth.[7]


  1. ^ a b " Q&A Session #2". DotA Forums. February 3, 2009. Archived from the original on December 29, 2011.
  2. ^ Biessener, Adam (October 13, 2010). "Valve's New Game Announced, Detailed: Dota 2". Game Informer.
  3. ^ Dean, Paul (August 16, 2011). "The Story of DOTA". Eurogamer.
  4. ^ Waldbridge, Michael (May 30, 2008). "The Game Anthropologist: Defense of the Ancients: An Underground Revolution". GameSetWatch. Archived from the original on April 17, 2009.
  5. ^ Taormina, Anthony. "'Defense of the Ancients: Allstars' Developer IceFrog Speaks on Dota 2". Retrieved October 4, 2016.
  6. ^ Gilbert, Ben (October 13, 2010). "Alleged Valve employee speaks out on DotA co-developer". Engadget. Retrieved July 2, 2019.
  7. ^ "Order Denying Motion For Partial Summary Judgement And Denying Motion For Rule 11 Sanctions - Blizzard Entertainment, Inc. & Valve Corp. vs Lilith Games & uCool, Inc" (PDF). April 16, 2017.