First reported by Ars Technica, a team of Diablo speedrun enthusiasts have decisively proven that a three minute any% world record that has stood since 2009 was faked. The effort required reverse-engineering Diablo's map generation system, which has 2.2 billion possible legitimate outputs.
The offending speedrun was uploaded to Speed Demos Archive by Maciej "groobo" Maselewski back in March 2009, and featured an unbelievably "lucky" sorcerer run with a finishing time of 3:12. The run was segmented any%, meaning groobo could use certain allowed exploits, as well as save the game and redo a portion to get a better time, adding those best-of segments together for the final count. The Diablo mapgen team alleges that groopo's manipulation of the game went far beyond what was disclosed or allowed.
