The Expanse: Osiris Reborn has locked in its next big milestone, with Owlcat Games announcing a closed beta starting April 22 for supporters and confirming the sci-fi action RPG will launch in Spring 2027. The studio also revealed the game will hit Xbox Game Pass on day one.
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Shown during the latest Xbox Partner Preview, the new gameplay trailer offers the clearest look yet at The Expanse: Osiris Reborn, a third-person action RPG set in the same universe as the books and TV series. While it pulls from familiar events and factions, Owlcat says this story will focus on its own cast, choices, and conflicts.
Closed beta begins April 22 for Founder’s Pack buyers
Starting April 22, players who purchase either the Collector’s Edition or Miller’s Pack through the official website will get access to the closed beta on Steam, Xbox Series X|S, and PlayStation 5.
The beta will let players step into the role of a Pinkwater Security mercenary and try out a slice of the game firsthand. According to Owlcat, that includes combat, zero-gravity movement, dialogue choices, and character progression, all set aboard a remote Pinkwater station after the fallout from Eros.
That is a smart section of the game to test. It gives players a feel for how The Expanse: Osiris Reborn handles both its RPG and action systems without revealing too much of the broader story too early.
A new story in The Expanse universe
In The Expanse: Osiris Reborn, you play as a mercenary who survives the catastrophic events on Eros and is then pulled into a larger fight involving Protogen and its experiments. Owlcat says the game is built around companions, player choice, and dynamic third-person combat, which makes the studio’s ambitions pretty clear.
That setup sounds like exactly what you would want from an Expanse RPG. The setting already has political tension, class conflict, fragile alliances, and constant pressure from forces bigger than any one person. It is a good fit for a party-driven RPG where decisions are meant to carry some weight.
The key will be execution. Owlcat has experience building choice-heavy RPGs, but The Expanse: Osiris Reborn also needs to sell movement, shooting, and zero-g combat in a way that feels sharp rather than stiff. The beta should give players their first real sense of how well that balance works.
Beta feedback will shape the final game
Owlcat says it plans to use player feedback from the beta to help improve the final release. The beta will remain available from April 22 through the Spring 2027 launch, giving supporters a long runway to test systems and see how the game evolves.
The studio also notes that the beta is still a work in progress, so players should expect unfinished performance and polish. On consoles, Owlcat recommends playing on Xbox Series X or PlayStation 5.
That long beta period could help. RPGs like this tend to live or die on system balance, encounter pacing, and how reactive the game feels over time. A longer feedback window gives Owlcat room to tune things before release.
Day one on Game Pass gives it a wider audience
One of the bigger announcements here is that The Expanse: Osiris Reborn will launch on Xbox Game Pass on day one. For a new RPG based on a known sci-fi license, that is a solid move. It lowers the barrier for curious players and gives the game a much larger audience right out of the gate.
The full game is set to launch in Spring 2027 for PC via Steam, the Epic Games Store, and GOG, as well as Xbox Series X|S and PlayStation 5.
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