Osiris Reborn Release Date, Platforms, Game Pass & Beta

The Expanse: Osiris Reborn is targeting a Q2 2027 launch window on Steam, with publisher Owlcat Games separately committing to Spring 2027. It arrives on PC (Steam, Epic Games Store, and GOG), Xbox Series X|S, and PlayStation 5, launches on Xbox Game Pass from day one, and runs a purchase-gated closed beta that is live now.

Release date: what's confirmed and what isn't

The two windows Owlcat has published point toward an April-to-June 2027 arrival, but no exact day has been set yet.

Two things to keep in mind. First, the two windows overlap but aren't identical: "Spring 2027" runs March 20 to June 20, while "Q2 2027" is April through June. The intersection — the range both point to — is April to June, so that's the safest planning assumption. Second, release windows in an in-development game can still slide. The moment Owlcat confirms a firm date, this page is updated the same day.

Every platform confirmed so far

Owlcat has named five storefront and platform targets:

1. PC — Steam
2. PC — Epic Games Store
3. PC — GOG
4. Xbox Series X|S
5. PlayStation 5

There is no announced Nintendo Switch version, and no last-generation (PS4 / Xbox One) version. For now this is a current-gen console plus PC release only. The Steam listing is live and wishlistable today, so PC players can add it now and get notified when preload or launch begins.

Is Osiris Reborn on Xbox Game Pass?

Yes — day one, at launch. The official announcement states the game "will launch in Spring 2027 on PC (via Steam, Epic Games Store, and GOG) and on Xbox Series X|S and PlayStation 5, with a Day 1 launch on Xbox Game Pass."

The commitment is specifically to Xbox Game Pass on launch day. That means Xbox subscribers play at release without buying the game separately. The announcement does not name PC Game Pass or any specific subscription tier, so we don't claim those — if you're on PC and want to own it, the game will be sold through Steam, Epic Games Store, and GOG.

You do not need a preorder or a Founder pack to play the full game. Those packs only matter for the closed beta (below).

The closed beta: who can play and how

The beta is live now and runs "until the game's launch in Spring 2027." Here are the two things that matter most.

Who qualifies

Beta access is tied to two specific purchases:

• Miller's Pack — includes beta access.
• Collector's Edition — includes beta access.

A standard preorder does not include beta access. The official announcement is explicit that the beta is "available on Steam, Xbox Series X|S, and PlayStation 5 to everyone who purchases the Collector's Edition or Miller's Pack" — there is no free or open beta, and no third route in.

How you actually get in

Once you own a qualifying pack, the redemption flow is: log in to the official site → open your Profile → Digital Downloads → choose your platform → copy the code → activate it on Steam (for the PC version). Consoles use their own store redemption, but the documented Steam path is the one above.

What's in the beta

The beta is a slice of the full game, not a standalone demo. It drops you on a remote space station belonging to your employer, Pinkwater Security, in the aftermath of escaping the events on Eros. You can explore the station, interact with its inhabitants, and experiment with dialogue options and choices before the people behind the Eros attack catch up — at which point the combat and upgrade mechanics come into play.

Owlcat is explicit that it will fold player feedback from the beta into the final build, and warns that beta performance "may vary and won't reflect the final quality of the game."

The game in 30 seconds

For anyone landing here without context: The Expanse: Osiris Reborn is a story-driven, third-person action RPG from Owlcat Games, the studio behind Pathfinder: Wrath of the Righteous and Warhammer 40,000: Rogue Trader. You play a Pinkwater Security mercenary who survives the catastrophic incident on Eros and has to build a crew and fight back against Protogen and their experiments.

The publisher's description stresses three pillars — companions, player choices, and dynamic third-person combat. It lives in The Expanse universe but tells its own story with its own characters, so you don't need to have read the books or watched the show to follow it, though fans will recognize the Eros and Protogen threads.

What's still unannounced

These are the gaps we will not fill in with guesses:

• An exact release date (only "Q2 2027" / "Spring 2027" exists today).
• A physical edition or a Switch version.
• Steam Deck verification status.
• Final system requirements — the current spec list is from the closed beta and can change.

FAQ

Is Osiris Reborn on Game Pass day one?

Yes. The publisher's release states it launches on Xbox Game Pass from day one in Spring 2027.

Is there a Nintendo Switch version?

No version has been announced for Switch or last-gen consoles.

Do I need to preorder to play the beta?

You need the Miller's Pack or Collector's Edition — a standard preorder does not include beta access.

When is the closed beta?

It began April 22, 2026, on Steam, Xbox Series X|S, and PlayStation 5, and runs until launch.

Where we got these facts

Everything on this page was read directly on November 12, 2026 from two primary sources: the Steam store listing for The Expanse: Osiris Reborn (showing "Q2 2027" and Owlcat Games as developer and publisher) and Owlcat's own closed-beta press release on GamesPress, dated March 26, 2026, which announces Spring 2027, the five platform targets, day-one Game Pass, and the beta terms. The beta redemption steps (Profile → Digital Downloads → copy code → Steam activation) come from Owlcat's Steam announcement "The Beta is available!", transcribed by the content reviewer from the Steam news API; we did not open that announcement directly. Treat "Q2 2027 / Spring 2027" as a window, not a promise — this page is refreshed the same day Owlcat names a firm date.

Last updated: 2026-11-12. Unofficial fan site — The Expanse is an Alcon/Syfy property.