Recently, the operator of World of Warcraft (WoW) MMO, objected to the development of a software add-on, called WoW Glider, that allowed a user's character in the game to play even after the user signs off. Such add-ons (known as "bots") were explicitly prohibited by the World of Warcraft Terms of Use (TOU), incorporated into the EULA. MDY Industries, LLC v. Blizzard Entertainment, Inc., 2008 U.S. Dist. LEXIS 53998 (D. Ariz. 2008).
Blizzard claimed that the copy of the World of Warcraft client software loaded into RAM by a user running WoW Glider was an infringement because the copy violated the TOU and therefore of the EULA. The court agreed, holding that the TOU limited the license granted by the EULA. Thus, any operation of the software contrary to the TOU, such as running bots like the WoW Glider, was copyright infringement.