Owlcat Games released the official launch trailer for "The Infinite Museion," the third story-expansion DLC for Warhammer 40,000: Rogue Trader [1].

The expansion introduces new narrative content and gameplay mechanics to the tactical RPG. By expanding the game's universe, Owlcat Games aims to maintain player engagement and deepen the lore of the Warhammer 40,000 setting.

The trailer, which premiered during IGN Live 2026 [2], showcases the vault of Trazyn the Infinite. This setting serves as the primary backdrop for the new content, offering players a glimpse into the Necron collector's vast archives. The footage highlights the atmospheric scale of the Museion and the challenges awaiting the player's crew.

Alongside the new environment, the expansion introduces Eogunn Februs as a new companion. The trailer emphasizes the role of this character within the story, suggesting new tactical options and dialogue paths for the player to explore. This addition follows the developer's pattern of integrating complex new personalities into the crew's dynamic.

"The Infinite Museion" is the third story expansion released for the title [1]. The DLC is available across multiple platforms to ensure wide accessibility for the existing player base. PC players can access the content through Steam, GOG, and the Epic Games Store [3]. Additionally, the expansion is available for PlayStation 5 and Xbox Series X/S [3].

Owlcat Games said the goal of the expansion is to showcase the vault of Trazyn the Infinite and encourage players to return to the game [4]. The launch coincides with the broader industry showcase at IGN Live, utilizing the event's visibility to reach both current fans and new audiences. The trailer emphasizes the intersection of high-stakes exploration and the specific, eccentric nature of Trazyn's collection [4].

“The Infinite Museion is the third story expansion for Warhammer 40,000: Rogue Trader”

The release of a third major story expansion indicates a long-term support strategy for Rogue Trader, moving beyond the initial launch window. By focusing on a high-profile lore figure like Trazyn the Infinite, Owlcat Games is leveraging established Warhammer 40,000 mythology to attract veteran fans of the franchise while extending the commercial life of the game across PC and console platforms.