If you count every main release, Assassin's Creed III was actually the fifth game to be released (after AC1 , AC2 , Brotherhood , and Revelations ).
Available as a Remastered edition on Steam and Ubisoft Connect . 3. Assassin's Creed Valhalla (Roman numeral "V")
You can officially buy and download it on the Ubisoft Store , Steam , or the Epic Games Store . 2. Assassin's Creed III (Technically the 5th released game)
Although it does not have a "5" in the title, Unity was the first next-generation exclusive following Black Flag and was internally referred to as the next major step.
There is no official game titled . Ubisoft moved away from numbering the series after the fourth main game.