Osiris Reborn Unveils Ganymede Infiltration
At gamescom, Owlcat Games revealed a new Ganymede infiltration mission for The Expanse: Osiris Reborn, detailing undercover entry into a Protogen base, crew support, and a bio-engineered threat. The game launches spring 2027 on PS5, Xbox Series X|S, PC and will be available on Xbox Game Pass from day one.
The Expanse: Osiris Reborn showcased a new Ganymede infiltration mission at gamescom. The studio revealed the mission during GameStar’s Find Your Next Game event, highlighting exploration, dialogue, combat and a firefight. The game will launch spring 2027 on PS5, Xbox Series X|S, Steam, Epic Games Store and GOG, and will be available on Xbox Game Pass from day one.
Ganymede Mission Reveal
The Captain and their twin sibling, J, are tasked with recovering data stolen from them on Pinkwater station. They first enter the Protogen base undercover, speak with employees, and try to reach the storage area without attracting attention while the rest of the crew provides technical help from elsewhere. An unexpected third party interrupts the operation and releases a bio-engineered creature inside the facility, forcing the siblings to fight their way out. Ganymede is a familiar location for fans, as it becomes one of the series’ major sites, and Protogen is central to the protomolecule experiments that drive the early books and TV seasons.
Gameplay Mechanics and Companions
Owlcat Games first revealed The Expanse: Osiris Reborn in June 2025, drawing comparisons to Mass Effect because of its third-person combat, ship, companions, dialogue choices and customizable protagonist. The Captain can be an Earther, Martian or Belter, and choices affect relationships and quest outcomes. Companions can open different options during missions. The studio showed the Exploits mechanic in March, allowing companions to contribute directly during combat. Players normally take two crew members into the field, while characters left aboard the Gemini can still assist remotely depending on their abilities. Zafar and Michael are among the recruitable companions. Players can view companion stats on the stats page, and the crew can be seen in the squad view. The mission progression can be tracked in the fixtures section, while overall campaign standings are shown in the standings. Injuries to crew members are listed in the injuries tab.
Release and Availability
Players have already tried part of the game through a closed beta that began April 22. Its mission takes place earlier in the story on Pinkwater 4, where the Captain meets Zafar and deals with Protogen catching up to the crew, making the new Ganymede trailer look considerably further into the campaign. Dot Esports may earn a small affiliate commission when you purchase through links on our site. The game will be available on Xbox Game Pass from day one.
