The official PC version of Assassin's Creed Rogue was released on March 10, 2015. Shortly after, the scene group CODEX, widely known for its high-quality cracks of Denuvo and other DRM protections, released their version, tagging it with their signature moniker: "Assassins.Creed.Rogue-CODEX".
It sounds like you’re referencing the release scene name for Assassin’s Creed Rogue —but if you’d like a proper story summary (narrative-focused, spoiler-conscious) for the game itself, here it is:
While Unity suffered from game-breaking bugs at launch, Rogue was incredibly stable. Today, it is remembered as a hidden gem that offered one of the best stories in the Assassin's Creed mythos.
To understand the significance of the "Assassins.Creed.Rogue-CODEX" release, one must look at the intersection of game design, optimization, and the preservation culture of the PC gaming scene during the mid-2010s. The Context: A Tale of Two Creeds

