The makers of World of Warcraft are locked in a legal battle with a firm that has produced a tool to automate many actions in the virtual world.
Blizzard is suing Michael Donnelly, the creator of the MMO Glider program, which performs key tasks in the game automatically, such as fighting.
Both sides have submitted legal summaries to a court in Arizona.In its legal submission to the court last week, the firm said: "Blizzard's designs expectations are frustrated, and resources are allocated unevenly, when bots are introduced into the WoW universe, because bots spend far more time in-game than an ordinary player would and consume resources the entire time."
Blizzard says Glide is a software bot which infringes the company's copyright and potentially damages the game.
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