Assassin's Creed Black Flag Resynced has achieved two million unit sales on its launch day, Ubisoft announced via a press release. This disclosure represents the first time in over a decade that the publisher has released specific unit sales figures for an Assassin's Creed title. The announcement also highlighted the game's critical and streaming success.

Historically, Ubisoft has frequently reported player counts, revenue figures, or comparisons to previous titles without providing concrete unit sales numbers. For instance, Assassin's Creed Shadows reportedly delivered the second-highest Day 1 sales revenue in the franchise, trailing only Assassin's Creed Valhalla, and set a new record for Ubisoft's Day 1 digital store performance. However, specific monetary values or unit sales for Valhalla remain undisclosed.

Assassin's Creed Mirage also saw significant player engagement, surpassing 10 million players following its Valley of Memory update. This figure, however, includes players subscribed to Ubisoft+ Premium and those who experienced the game through a limited free trial, making it an imprecise metric for direct sales.

Assassin's Creed Valhalla was noted by Ubisoft to have the best launch sales of any Assassin's Creed game up to that point. By October 2022, it had reached over 20 million players, a number that also accounts for subscription services and potential free weekend participation.

Ubisoft stated in a May 2020 earnings report that 11 of its games, including Assassin's Creed Odyssey, Assassin's Creed Unity, and Assassin's Creed Origins, had sold over 10 million copies. While this offers some insight, the exact extent beyond the 10 million mark for these titles remains unspecified.

Assassin's Creed Origins' sales were reportedly double that of Assassin's Creed Syndicate within their first 10 days, though the nature of these sales (revenue versus units) and Syndicate's initial performance are not clearly defined. Both titles had also surpassed 10 million copies sold at some point.

Assassin's Creed Syndicate, released in 2015, was cited by some reports as having sold 5.5 million units by 2017, though a definitive Ubisoft source for this number is elusive. Assassin's Creed Unity and Assassin's Creed Rogue together sold 10 million units as of December 2014. Assassin's Creed IV: Black Flag, the original title, sold 11 million copies by March 2014, representing one of the few instances of clear unit sales disclosure in the series' past.

This trend of releasing ambiguous metrics has made it difficult for journalists, analysts, and enthusiasts to ascertain the true performance of Ubisoft's titles. The company often opts for figures like player counts over extended periods, short-term sales milestones, or comparative performance without providing baseline numbers.

The substantial sales of Assassin's Creed Black Flag Resynced in its first day underscore the enduring popularity of the original game, but the broader implications for Ubisoft's commercial strategy or the studio's financial health remain unclear, especially in light of recent reports regarding developer job losses at Ubisoft Barcelona.