Watch Dogs has shipped more than 8 million units, Ubisoft announced on Thursday.
The open-world hacking game sold 4 million copies to consumers in its first week, making it Ubisoft's fastest selling game in week one.
"Watch Dogs is now well positioned as a major franchise and we will be able to replicate and build on its success in the coming years," Ubisoft CEO Yves Guillemot said in a sales statement.
"Its sales performance testifies to Ubisoft's expertise as a creator of blockbuster brands. That expertise enables us to stand out from our competitors at the beginning of each console cycle and therefore to reach a new dimension."
The company announced that sales for the first quarter of its 2014-15 fiscal year came to €360 million ($490 million), a 374 percent increase over the €76 million ($103 million) sales it posted for the first quarter of 2013-14.
Digital sales grew 149 percent from the same period last year to €84 million ($114 million). Guillemot said in a conference call with investors that 14 percent of the game's sales were delivered digitally.