Glider (bot)

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Glider small logo.png
Original author(s)Michael Donnelly[1]
Developer(s)MDY Industries, LLC[1]
Initial releaseJune 2005; 17 years ago (2005-06)[1]
Stable release
1.8.0 / January 21, 2009; 13 years ago (2009-01-21)[2]
Operating systemMicrosoft Windows 2000, XP, Vista[3]
Platform.NET 2.0[3]
TypeInternet bot[3]
LicenseShareware (US$25)[4] Edit this on Wikidata

Glider, also known as WoWGlider or MMOGlider, was a bot created by MDY Industries, which interoperated with World of Warcraft. Glider automated and simplified actions by the user through the use of scripting to perform repetitive tasks while the user was away from the computer. This allowed the user to acquire in-game currency and level-ups of the character without being present to perform the required actions.[5] As of 2008, it had sold approximately 100,000 copies.[1] Glider was ultimately discontinued after a lawsuit was filed against MDY Industries by Blizzard Entertainment.[6]

Glider was featured in the 2018 documentary film Play Money[7][8] and its creator Michael Donnelly was a speaker at DEF CON 19.[9]

MDY v. Blizzard[edit]

While MDY Industries asserts that the software is meant to overcome design flaws in the World of Warcraft environment, Blizzard contended in a 2006 United States federal lawsuit that the program's use violated their terms of service.[10] In July 2008, the court entered summary judgment holding MDY Industries liable for tortious interference and copyright infringement, based, in part, upon the legal premise that users of the World of Warcraft client software are licensees rather than owners of their copy of software.[1]

Public Knowledge, a public interest group which filed an amicus brief in the case,[11] criticized the decision, saying it makes the loading into memory of legally obtained software an act of copyright infringement subject to high statutory penalties, if the user has violated the software's license agreement in any way.[12][13] The court did not hold this view and found that Glider infringed upon Blizzard's intellectual property by making an illicit copy of the World of Warcraft client in order to avoid Blizzard's anti-cheating software, Warden, and ordered MDY Industries to pay Blizzard $6,000,000.[14] In finding this, the court agreed with Blizzard that World of Warcraft is licensed, not sold.[15]

Following the judgment, Blizzard petitioned to enjoin MDY Industries from distributing Glider or releasing its source code.[16] In March 2009, MDY Industries suspended Glider sales and operations pursuant to an injunction.[17] On December 14, 2010, United States Court of Appeals for the Ninth Circuit issued its ruling. They agreed that users were licensees rather than owners of the software. They changed the ruling on copyright, stating that users were in breach of contract concerning the end-user license agreement (EULA), but that this did not constitute a violation of copyright. Nevertheless, they ruled that the bot violated the DMCA. MDY requested that the case be sent back for review, but as of August 2011, the court had yet to hear or agree to any review. MDY's owner, Michael Donnely stated in a release on the official forums that given the manner of the ruling and the statements by the court, it was highly unlikely that MDY was going to be able to bring Glider back in any form. He stated that they were looking at their options, and that he would speak with the lawyers working the case, but due to the cost of the case it was not likely that there was much that they could do. By September 2011,, the official "Glider" homepage, had vanished.[18][19]

As of February 23, 2012, Blizzard acquired the domain name and it is currently redirecting to a Blizzard-owned website,[20][21] Blizzard Entertainment also acquired ownership of 4 MDY Industries trademarks, including the "Glider" word mark and the corresponding logo image marks.[22][23] The trademarks were cancelled in 2015 by the United States Patent and Trademark Office due to Blizzard Entertainment not renewing them.[24]

The domain name and trademark transfers suggests that a settlement might have been reached between MDY Industries and Blizzard Entertainment. However, details of the outcome of the case have not been released by either party and legal settlements are often confidential.


  1. ^ a b c d e MDY Industries, LLC v. Blizzard Entertainment, Inc. et al., Order (District of Arizona 2008).
  2. ^ "Glider 1.8.0 release". January 21, 2009. Archived from the original on February 21, 2009. Retrieved 2009-03-01.
  3. ^ a b c "Frequently Asked Questions about Glider". 2008-01-04. Archived from the original on 2008-07-03. Retrieved 2008-08-04.
  4. ^ Boyer, Brandon (February 22, 2007). "Blizzard, Vivendi File Suit Against WoW Bot Creator". Gamasutra. Retrieved 2008-08-11.
  5. ^ Lastowka, Greg; Dougherty, Candidus (13 February 2008). "Copyright Issues in Virtual Economies". E-Commerce & Policy. 9 (5). SSRN 1092285.
  6. ^ "The Lawbringer: Glider's story ends".
  7. ^ "Play Money".
  8. ^ "Play Money". Play Money Film.
  9. ^ Christiaan008 (14 February 2012). "DEFCON 19: Hacking MMORPGs for Fun and Mostly Profit ( w speaker)". Archived from the original on 2021-12-21 – via YouTube.
  10. ^ "Legal battle over Warcraft 'bot'". BBC News. BBC. March 26, 2008. Retrieved 2008-08-11.
  11. ^ MDY Industries, LLC v. Blizzard Entertainment, Inc. et al., Amicus curiae brief of Public Knowledge in support of neither party on cross-motions for summary judgment (District of Arizona 2008).
  12. ^ Siy, Sherwin (2008-07-15). "Fine Print Scarier Than Ever: District Court Rules Against MDY in Glider Case". Archived from the original on 2008-08-04. Retrieved 2008-08-04.
  13. ^ Claburn, Thomas (July 16, 2008). "Blizzard Wins Big Legal Victory Upholding Software License Rules". Information Week. Retrieved 2008-08-16.
  14. ^ Ziebart, Alex (1 October 2008). "Blizzard wins $6 million in court case with MMO Glider". WoW Insider. Joystiq. Archived from the original on 4 June 2009.{{cite web}}: CS1 maint: unfit URL (link)
  15. ^ Kuchera, Ben (May 7, 2008). "Blizzard attempt to kill WoW bot bad news for copyright law". Ars Technica. Retrieved 2008-08-11.
  16. ^ Duranske, Benjamin (July 29, 2008). "Blizzard Seeks Permanent Injunction Against MDY, Asks Court to Prohibit Making Glider Open Source". Virtually Blind. Retrieved 2008-08-16.
  17. ^ "Glider off-line, effective March 12th, 2009". 2009-03-12. Retrieved 2009-10-08.
  18. ^ Corynne McSherry (2010-12-14). "A Mixed Ninth Circuit Ruling in MDY v. Blizzard: WoW Buyers Are Not Owners – But Glider Users Are Not Copyright Infringers Legal Analysis".
  19. ^ von Lohmann, Fred (2009-09-25). "You Bought It, You Own It: MDY v. Blizzard Appealed". Electronic Frontier Foundation. Retrieved 2009-10-08.
  20. ^ "Whois Lookup & IP -".
  21. ^ "World of Warcraft". World of Warcraft.
  22. ^ "Trademark Status & Document Retrieval".
  23. ^ "Trademark Status & Document Retrieval".
  24. ^ "GLIDER Trademark - Registration Number 3444885 - Serial Number 77301191 :: Justia Trademarks".