Activision's Call of Duty: Black Ops generated $360 million in the UK and US alone during its first 24 hours on sale.
That's according to Activision, which puts the figure at $50 million more than last year's Call of Duty: Modern Warfare 2.
The game sold-through around 5.6 million units in the UK and North America, compared to 4.7 million of Modern Warfare 2.
"There has never been another entertainment franchise that has set opening day records for two consecutive years and we are on track to outperform last year's five-day global sales record of $550 million ," said Bobby Kotick , CEO of Activision Blizzard.
"The game's success underscores the pop culture appeal of the brand. Call of Duty: Black Ops is the finest game that Treyarch has ever made and raises the bar for online gameplay by delivering the deepest and most intense Call of Duty experience yet.
"The Call of Duty franchise has over 25 million players around the world that are engaged in billions of hours of online gameplay, and we are committed to supporting them with new content and features on a more frequent and regular basis," he added.