Speedrunning history has been rewritten as a once-untouchable Diablo record is exposed as fraudulent. A 15-year-old speedrun, long considered unbeatable, was debunked after investigators analyzed 2.2 billion game seeds, uncovering inconsistencies and video splicing. The revelation led to the removal of the record, reigniting interest in the Diablo speedrunning community. With the truth revealed, new contenders are now stepping up, determined to set legitimate records in a category that had been stagnant for over a decade.
Speedrunning has long been a beloved challenge for gamers, with some records standing strong for decades. Once thought unbeatable, One legendary Diablo run has been exposed as illegitimate after a thorough investigation.
Legendary Diablo run faces scrutiny
In 2009, Maciej “Groobo” Maselewski set an Any% segmented run record in Diablo as the Sorcerer, completing the game in three minutes and 12 seconds. The run, published on Speed Demos Archive (SDA), went unchallenged for years, earning two Guinness World Records.
Speedrunners investigate inconsistencies
In 2024, speedrunner Funkmastermp collaborated with Allan “dwangoAC” Cecil to create a Tool-Assisted Speedrun (TAS) of Diablo. Their analysis uncovered irregularities in Groobo’s run, prompting deeper investigation.
How the team cracked the case
- Custom tools were developed to reverse-engineer Diablo’s RNG seed system.
- Over 2.2 billion RNG seeds were analyzed to recreate Groobo’s run.
- Discrepancies appeared in maps, item placements, and version markers.
- Evidence suggested gameplay segments were spliced from multiple runs.
Official response and removal of records
The investigation team concluded that Groobo’s run was manipulated using “illegitimate means,” including video splicing and memory modifications. SDA reviewed the findings and, on September 10, 2024, removed all Diablo runs by Groobo.
Diablo speedrunning revived with new records
With the fraudulent run debunked, the speedrunning community has regained interest, pushing for new legitimate records. The discovery has reignited competition in a category once thought stagnant.
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