The announcement of The Expanse: Osiris Reborn in June brought plenty of excitement for fans of sci-fi RPGs. Developed by ss in collaboration with Alcon Entertainment, the game promises a new narrative experience while staying connected to the established universe. It takes place alongside events from the first two books and the early seasons of the TV show, offering a parallel storyline rather than a direct adaptation.

We are excited to announce The Expanse: Osiris Reborn, a new sci-fi action RPG based on The Expanse.
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Players won’t need to read or watch anything beforehand to enjoy the game, but those who want to catch hidden references and Easter eggs will benefit from exploring the novels, comics, and the show. Cameos from familiar characters and voices are confirmed, further deepening the link between the game and its source material.

Gameplay and Mechanics in The Expanse: Osiris Reborn

The Expanse: Osiris Reborn offers third-person, cover-based combat with zero-gravity traversal and environmental interaction powered by Unreal Engine 5. Movement includes mag-locked boots and free-floating sequences in space, creating a more immersive experience.

Players can choose their origin as an Earther, Martian, or Belter, impacting dialogue options and how factions respond to decisions. Squad-based mechanics play a major role, with the ability to recruit crew members, manage relationships, and influence their loyalty through choices. Inspired by Mass Effect, the game mixes cinematic storytelling with branching narrative paths, giving players multiple ways to approach each mission.

Connections Between the Show, Books, and Game

The game’s timeline overlaps with seasons 1, 2, and part of season 3 of the TV series while pulling narrative elements from the first two novels. While the books, comics, and show each maintain separate canons, The Expanse: Osiris Reborn blends these influences, leaning slightly closer to the show’s continuity.

In addition, references to existing expanded media like the Telltale series and Dragon Tooth comics are expected. Players familiar with these stories will notice subtle nods to past events and characters. However, the developers have emphasized that the story stands on its own, making it accessible for newcomers without prior knowledge.

What Fans Can Expect Going Forward

Owlcat Games has confirmed that actors from the TV series are reprising their roles, giving authenticity to key characters and events. With its mix of player-driven narrative, familiar faces, and new storylines, The Expanse: Osiris Reborn aims to deliver an experience that rewards longtime fans while welcoming first-time players.

Although the release date hasn’t been announced yet, the developers plan to share more updates closer to launch. Until then, players have time to revisit the books, watch the show, and explore the comics to fully prepare for the game’s release.