Blizzard, creator of World Of Warcraft is suing the maker of a software tool that it says infringes its copyright. Michael Donnelly, creator of the MMO Glider program that automates everyday actions in the game, denies any infringement. He states that no copy of World Of Warcraft is ever made using his program.

Blizzard is demanding that he cease selling Glider and hand over all profits he’s made from the program. This could amount to several million dollars as Michael claims to have sold over 100,000 copies, which ranges in price from a $5 month subscription to a $60 lifetime pass.