The Expanse: Osiris Reborn is shaping up to be more than just a tribute to Mass Effect-it’s a love letter to sci-fi RPGs with its own voice. 
Developed by Owlcat Games, the creators of Warhammer 40,000: Rogue Trader, this new title dives headfirst into the beloved universe of The Expanse, while borrowing the emotional depth, choice-driven gameplay, and party dynamics that fans of BioWare’s masterpiece will immediately recognize.
In a candid interview with IGN, creative director Alexander Mishulin and head of publishing Andrey Tsvetkov laid all their cards on the table: yes, Mass Effect was a major influence-but Osiris Reborn is very much its own game. Players step into the boots of a custom mercenary with a sibling by their side-an unusual but compelling twist that adds emotional weight right from the start.
True to modern RPG standards, the game offers robust character creation, gender choice, full voice acting, and the option to define your playstyle-from classic sniper to creative hybrids
. Your choices matter, not just narratively but politically, as you navigate a solar system split between Earth, Mars, and the Belt, all with their own agendas and internal conflicts.
The game promises the return of several actors from the Amazon Prime show, reprising their iconic roles. While exact names are under wraps, fans can expect familiar faces (and voices) to lend continuity to the experience.
Romance is also in-another nod to BioWare’s legacy. Companions play central roles not just in combat but in emotional arcs, with inter-faction tensions adding realism and conflict to every decision. Whether your party is made of Martians, Earthers, or Belters, expect ideological clashes and loyalty-defining moments.
Though more action-packed and cinematic than previous Owlcat titles, Osiris Reborn remains grounded in hard sci-fi. 
Expect graphic violence, mature storytelling, and yes-plenty of zero-G moments. Blood doesn’t just splatter; it floats.
While you won’t pilot ships directly, space travel is treated with realism-from gravitational slingshots to somersault maneuvers. But the studio’s goal is clear: story first, spectacle second.
With Unreal Engine 5 powering the visuals and former Cyberpunk developers joining the team, this is Owlcat’s boldest project yet
. It’s a shorter experience than Rogue Trader, but richer in narrative dynamism and visual fidelity.
No release date just yet, but development began in 2022 and the team is taking their time. Judging by the ambition and passion, Osiris Reborn could be the perfect intersection of Mass Effect, The Expanse, and tactical RPG greatness.