A week after Take-Two first announced that GTA IV had broken launch day records, the Guinness Book of World Records confirmed on Tuesday.
According to Guinness, Grand Theft Auto IV sold an impressive 3.6 million units in its first 24 hours, totaling a record-setting $US310 million in gross sales.
The figures easily push the Rockstar game above all other entertainment record holders, including Halo 3 with $170 million in day one sales, Spiderman 3 with $60 million, and Harry Potter & The Deathly Hallows at $220 million.
"The record establishes GTA IV as the most profitable entertainment release of all-time, far surpassing other video game, film and book releases," said Guinness.
Last week, GTA publisher Take-Two said, "we believe [GTA IV] retail sales levels surpass any movie or music launch to date."