Ubisoft expects Watch Dogs to sell more than 6.2 million units when it goes on sale this November.
The figure would pitch Watch Dogs' sales beyond that of the original Assassin's Creed, which managed to sell 6.2m units following its launch in November 2007.
Discussing the game during its Q1 FY13-14 earnings call last night, Ubisoft explained that it had increased its expectations for the new IP following a positive reception at last month's E3.
"What is true is that three months ago when we announced our result we were referencing in our plan we had billed up Watch Dogs with expectations slightly below what Assassin's Creed 1 did when it was first released, [which] was 6.2m.
"So after E3, what we've said today was that we do feel that we can expect - or that's what we have billed in our expectation - slightly above the 6.2m that Assassin's Creed did."
Watch Dogs was nominated for multiple Game Critics Awards following its showing at last month's E3, and was one of our Games of the Show.
The game goes on sale on Xbox 360, PlayStation 3, PC and Wii U on November 22, 2013, with PS4 & Xbox One versions due around the consoles' launch.
Source: Ubisoft Fiscal Year 2013-14 Q1 Sales