The Expanse: Osiris Reborn – A Sci-Fi RPG Inspired by Mass Effect and Developed by the Makers of Warhammer 40,000: Rogue Trader

Introducing The Expanse: Osiris Reborn – A New Sci-Fi Adventure from Owlcat Games

Owlcat Games has officially announced The Expanse: Osiris Reborn, an immersive, narrative-driven action role-playing game set within the universe of the acclaimed sci-fi TV series The Expanse. Fans of the show can look forward to exploring familiar locations and engaging in a richly detailed story that captures the complex, realistic universe of the series.

Bringing Mass Effect-Style Gameplay to The Expanse Universe

Known for their mastery of isometric RPGs like Pathfinder: Wrath of the Righteous and Warhammer 40,000: Rogue Trader, Owlcat Games is venturing into a new territory reminiscent of the popular Mass Effect series. The game features a third-person over-the-shoulder perspective, cover-based shooting mechanics, and class-based powers, all wrapped in a compelling story of political intrigue, moral choices, and character development.

Familiar Faces and a Deep Storyline

According to Owlcat, players will encounter familiar characters from the TV series, with some actors reprising their roles. The story centers around a Pinkwater Security mercenary trapped during a deadly lockdown on Eros Station. As the protagonist, you will command a crew, pilot a spaceship through the solar system, and make consequential decisions that shape your journey and impact the universe.

Creative Vision and Inspiration

Alexander Mishulin, Owlcat’s Creative Director, shared his excitement about the project, stating, “We’ve dreamed of creating a sci-fi RPG on this scale for a long time, and The Expanse universe is perfect for bringing that vision to life.” He emphasized that the game aims for a mature, character-driven narrative grounded in realism and complexity, where player choices truly matter.

Game Design Producer Yuliya Chernenko added that the original Mass Effect trilogy was a significant inspiration for the team. She reflected on how the series left a lasting impression on many gamers, especially during their teenage years, and expressed their intention to build upon that legacy by delivering a story deeply rooted in hard science fiction—the core appeal of The Expanse universe.

Gameplay Features and Mechanics

Much like in Mass Effect, players will create their own captain, choosing between Earther, Martian, or Belter backgrounds, and take command of the most advanced ships in the system. You will lead a diverse crew—each member with their own motives, histories, and voices—while engaging in tactical third-person combat, utilizing real-time cover mechanics, special abilities, and squad coordination.

During battles, you can bring two companions into combat, while others provide support from behind the scenes, enhancing strategic depth and team dynamics.

Explore Iconic Locations from the Series

Fans of The Expanse will be thrilled to visit key locations from the show and books, such as Ganymede, Ceres, Mars, and Luna. The game promises a story grounded in tension, consequences, and the moral complexities of humanity’s future among the stars—a perfect reflection of the series’ themes and a familiar experience for dedicated fans.

Release Details and Future Plans

While an exact release date has not yet been announced, Owlcat states that The Expanse: Osiris Reborn is “coming soon” to platforms including Steam, Epic Games Store, GOG, Xbox Series X/S, and PlayStation 5. The game is poised to become Owlcat’s flagship project, even as the studio continues working on other titles, such as the recently announced Warhammer 40,000: Dark Heresy and DLC expansions for Warhammer 40,000: Rogue Trader.

Owlcat reassures fans that the development of The Expanse: Osiris Reborn is handled by a dedicated team separate from their other projects, ensuring the same level of quality and innovation.

Alex Hunter

Alex Hunter

Alex is a passionate gamer with over a decade of experience exploring everything from AAA blockbusters to indie gems. He specializes in uncovering hidden secrets, mastering complex mechanics, and creating in-depth walkthroughs. Whether it’s a challenging boss fight or a puzzling questline, Alex breaks it all down in a way that’s fun, clear, and engaging for readers of all levels.

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