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  1. Games
  2. RPGs
  3. The Expanse

The Expanse: Osiris Reborn devs "do not think of ourselves as a successor to the Mass Effect series," even if the Owlcat team "really enjoyed" and take "great inspiration" from BioWare's sci-fi RPGs

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By Catherine Lewis Contributions by Leon Hurley
Published 26 March 2026

Ultimately, "we are making our own game," says game design director Leonid Rastorguev

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The Expanse: Osiris Reborn screenshot shows a man wearing a helmet with a visor.
(Image credit: Owlcat Games)
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Owlcat Games' upcoming sci-fi RPG The Expanse: Osiris Reborn might take plenty of inspiration from Mass Effect, but its game design director says "we do not think of ourselves as a successor" to BioWare's series.

The Expanse devs have previously been open about Mass Effect's impact on their RPG, with creative director Alexander Mishulin calling it a "great inspiration," and game design director Leonid Rastorguev specifically pointing to Mass Effect 2's suicide mission as an influence. Speaking during a presentation attended by GamesRadar+, the devs are asked if they welcome those Mass Effect comparisons or if it's one that they'd rather fans didn't make, and while Rastorguev reiterates that, yes, the BioWare series has had an impact, this game is ultimately still an Owlcat creation.

"We actually said before that we really love the Mass Effect series, and it was a great inspiration for us," Rastorguev begins. "But we do not think of ourselves as a successor to the Mass Effect series or anything like that. We are making our own game, Owlcat game, as a start with our approach to narrative, to choices, to combat mechanics, and so on. So, in some parts, yes, we've played Mass Effect, definitely, and we enjoyed it a lot, but it's still a different game. It's [an] Owlcat game."

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Game design producer Yuliya Chernenko agrees, even though she thanks Mass Effect for leading her to her job in the first place, as she points to the sci-fi RPG and Neverwinter Nights as "two main games" that "made me join, basically, game development in general."

She continues, noting that Owlcat has already made "a lot of other games," and so "we have our own approach" to development.

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It's not going to be too long until players can see what the team has been cooking up, anyway. Although the full game isn't set to launch until spring 2027, it's getting a closed beta on April 22 this year for anyone who pre-purchases the Collector's Edition or "Miller's Pack" version.

The Expanse: Osiris Reborn is a Mass Effect-shaped rocket that could finally propel Owlcat into the RPG mainstream: "We'd been feeling a growing ambition to go bigger."

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Catherine Lewis
Catherine Lewis
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Deputy News Editor

I'm GamesRadar+'s Deputy News Editor, working alongside the rest of the news team to deliver cool gaming stories that we love. After spending more hours than I can count filling The University of Sheffield's student newspaper with Pokemon and indie game content, and picking up a degree in Journalism Studies, I started my career at GAMINGbible where I worked as a journalist for over a year and a half. I then became TechRadar Gaming's news writer, where I sourced stories and wrote about all sorts of intriguing topics. In my spare time, you're sure to find me on my Nintendo Switch or PS5 playing through story-driven RPGs like Xenoblade Chronicles and Persona 5 Royal, nuzlocking old Pokemon games, or going for a Victory Royale in Fortnite.

With contributions from
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