The Expanse: Osiris Reborn delivers an original story of survival and loyalty, and significantly expands the world of The Expanse depicted in the TV show and novels.

By the 24th century, humanity has conquered the cosmos. However, life has remained anything but easy. In The Expanse: Osiris Reborn, a story-driven sci-fi Action RPG, you play as a Pinkwater Security mercenary whose brief shore leave on the asteroid Eros spirals out of control. Trapped in a deadly lockdown and drawn into a solar system-wide conspiracy far beyond your control, you’ll have to adapt, survive, taking command of the most advanced ship in the whole of the solar system.

Create and customize your own captain — Earther, Martian, or Belter — and lead a crew of highly-skilled specialists as you face off against escalating threats, political pressure, and a relentless enemy that will stop at nothing to see you dead. In a solar system held together by fragile alliances, every decision leaves its mark.

You’re no hero — just a merc caught in the wrong place at the wrong time, trying to hold your crew together and keep the ship up and running. Your choices will shape your story.

Your companions are more than just mission assets — they are people with their own scars and loyalties. Some chase redemption. Others hide their truths. Over time, your relationships will flourish or deteriorate depending on the choices you make and how you choose to lead. The ship becomes your home — a place where trust is earned, not given.

Fight in third-person utilizing cover-focused gunplay and abilities. Two companions will accompany you into the field while others will support from a distance: disabling systems or drawing the enemies’ attention. You will issue real-time commands and have to adapt quickly to survive the manifold threats the system will throw at you.

Visit iconic locations like Ganymede, Ceres, Mars, and Luna. Walk through ruined habitats and political strongholds mired in unease and tension. Talk to the locals. Uncover secrets. Use your skills to influence what happens next. The system looks different from every planet and from every asteroid. Some are falling apart. Others just hide it better. You may even come across a familiar face or voice that reminds you of just how small the system really is.

Owlcat Games launched the closed beta for supporters of The Expanse: Osiris Reborn on Steam, PlayStation 5, and Xbox Series X|S, and will be running until the game’s launch in Spring 2027.

Players who purchased the Collector’s Edition or Miller’s Pack on the official website can now experience thrilling combat, movement in zero-g environments, and life and death on a remote space station as they get to know some of their companions. 

In the closed beta, founders can choose to play as either a female character from the Belt or a male character from Earth, also choosing between specializing in officer or hacker abilities. Accompanied by their openhearted sibling J and supported by veteran mechanic Zafar, players will explore a remote space station belonging to their employer, Pinkwater Security, in the wake of escaping from the catastrophic events on Eros, famously known from the books and TV series. 

Throughout the closed beta, players can interact with the station’s inhabitants, experiment with dialogue options and choices, and discover how everyday life on a space station full of mercenaries works. Once the masterminds behind the attack on Eros catch up to them, they’ll be thrown into the combat and experience the game’s upgrade mechanics firsthand.

Since the beta is a work in progress, performance may vary and won’t reflect the final quality of the game.

In the final game, players will also be able to choose Mars as their main character’s background alongside the Belt and Earth, with more specializations and customization available than in the beta. 

Key Features:

• Create Your Own Captain: Play as an Earther, Martian, or Belter and take command of the system’s most advanced ship. Shape your journey through identity, leadership, and the pressure of survival.
• Lead a Crew: Your companions are more than squadmates — they have pasts, motives, and a voice in your story. Your leadership decisions will determine how squadmate loyalty shifts under pressure.
• Tactical Third-Person Combat: Implement real-time strategic cover mechanics using various abilities and squad coordination. Bring two companions into combat while others support from behind the scenes.
• Explore a Divided Solar System: Travel across iconic locations from the TV show and books, like Ganymede, Ceres, Mars, and Luna. While traversing the various environments, players must uncover secrets and influence outcomes through their skills and decisions.
• A Story-Driven RPG True to The Expanse: Immerse yourself in a narrative grounded in tension, consequence, and the complexity of humanity’s future among the stars

The Expanse: Osiris Reborn is coming to PS5, Xbox Series X|S and PC (Steam, Epic Games Store, GOG) in Spring 2027.