The Expanse: Osiris Reborn is leaning hard into the "hard sci-fi" label that defined the original series. Owlcat Games recently revealed that former NASA astronaut and ISS Commander Leroy Chiao is consulting on the project, specifically to ensure the zero-G mechanics aren't just fun—they're terrifyingly accurate.
The Physics of Fear
In most space shooters, zero-G is treated like swimming underwater without the drag. You float, you shoot, you move on. According to the latest developer deep dive, Osiris Reborn is taking a different approach by simulating the actual anxiety of an EVA (Extravehicular Activity). Chiao's input has been crucial in translating the feeling of vulnerability when the only thing keeping you from drifting into the void is a magnetic lock.
This impacts gameplay directly through the mag boot mechanic. You aren't just walking on walls; you are managing your connection to surfaces. If that connection breaks during a firefight, the physics engine takes over. Recoil isn't just a stability stat here—it's propulsion. Firing a heavy weapon without being anchored will push you backward, potentially throwing you into open space or changing your trajectory entirely. This adds a layer of tactical positioning that run-and-gun shooters rarely touch.
Silence in the Vacuum
One of the most distinct changes coming from this consultation is the audio landscape. Hollywood loves loud space battles, but The Expanse has always respected the vacuum. The sound design in Osiris Reborn focuses on conduction through your suit.
Instead of hearing external explosions, the audio mix prioritizes internal sounds: your breathing, the mechanical whir of your suit, and the muffled thud of impacts vibrating through your armor. This creates a claustrophobic atmosphere where situational awareness relies more on visuals and suit sensors than audio cues from enemies.
When does The Expanse: Osiris Reborn Beta start?
While a specific release date for the full game remains unknown, Owlcat confirmed that Beta access is on the horizon for early adopters. Access will be granted to Founders who possess either a "Miller's Pack" or the Collector's Edition. If you are holding one of these founder tiers, keep an eye on your inbox for the schedule.