Chart-Track estimates Grand Theft Auto IV sold 609,000 units on its launch day in the UK, which eclipses GTA: San Andreas' 2004 first-day record of 501,000 units. GI.biz reports the game also broke records among the two consoles it's available on, with the Xbox 360 and PS3 selling 335,000 and 274,000 units respectively. The former records belonged to Halo 3 with 266,000 and GT5: Prologue with 80,000 units sold on day one.
The "official" Chart-Track sales data will release on May 6, with the current data being based on electronic point of sale and retailer estimates. We're still waiting for Take-Two to send out a press release trumpeting its global success.