Mass Effect has long reigned supreme in the space opera RPG genre, but its throne is about to face serious competition. While Exodus has already generated considerable buzz, The Expanse Osiris Reborn is positioning itself as perhaps the most ambitious challenger yet, leveraging an already beloved science fiction franchise to deliver what developers promise will be an even deeper choice-consequence system than BioWare’s legendary trilogy. With BioWare focused on the long-awaited Mass Effect 5, developer Owlcat Games sees an opportunity to fill the void in the space opera gaming landscape with their own vision of interstellar adventure and morally complex decision-making.

The original Mass Effect trilogy, released between 2007 and 2012, revolutionized RPG storytelling by introducing a system where player choices carried over between games, affecting everything from character relationships to the fate of entire civilizations. This ambitious narrative architecture was unprecedented at the time and remains rarely replicated in the gaming industry. Players who experienced Commander Shepard’s journey still remember agonizing over decisions that would haunt them games later, creating deeply personal stories that varied dramatically from one playthrough to another. It’s this emotional investment and narrative complexity that The Expanse Osiris Reborn hopes to capture and potentially exceed.

A Choice System Designed to Exceed Mass Effect’s Legacy

According to Owlcat Games’ latest development blog, The Expanse Osiris Reborn will feature an intricate web of choices with consequences that aren’t always immediately apparent. The developers emphasize that decisions will impact not just immediate events, but will create ripple effects throughout the entire game world. “Some decisions will determine the fate of a station, and your advice will sometimes alter the psychological trajectory of a crew member,” the studio explains. “Not to mention consequences that will only be revealed much later in the adventure, due to the snowball effect.” This approach mirrors what made Mass Effect so compelling while promising to take it even further.

The studio illustrates this with a concrete example from the game’s beta. During the finale at Pinkwater 4 station, players faced a pivotal choice: confront mercenaries head-on or attempt to flee. While this might seem like a simple combat decision, the developers reveal that its consequences extend far beyond that moment. “Later, you might find yourself facing the families of employees and see firsthand the impact of your decision on others. This decision can even affect the raid’s sponsors if the situation has spiraled out of their control.” This interconnected narrative design suggests a level of consequence tracking that could indeed surpass what BioWare achieved over a decade ago.

Companion Development Takes Center Stage

Perhaps the most intriguing innovation in The Expanse Osiris Reborn is its companion development system, which goes beyond traditional RPG party member mechanics. The developers highlight the character of Polly, a young crew member whose growth is shaped organically by player interactions. “You influence Polly with every conversation, reaction, or piece of advice,” the studio explains, adding that “you won’t immediately know which specific moments will stay with her, nor how they will change her future.” This uncertainty mirrors real-life mentorship relationships, where the impact of our words and actions on others often remains invisible until much later.

What truly sets this system apart from Mass Effect and other RPGs is the ability to choose mentors for companions, which directly affects their career paths, abilities, and even visual appearance. Polly can develop into entirely different roles depending on who guides her, fundamentally changing how she supports the player throughout their journey. This level of companion customization through narrative choices represents a significant evolution in RPG design, moving beyond simple approval systems to create genuinely dynamic character arcs that respond to player influence in meaningful ways.

Political Consequences and Narrative Identity

The Expanse Osiris Reborn also promises to deliver the kind of political complexity that made Mass Effect’s galactic politics so engaging. Player choices will shape how factions, crew members, and NPCs throughout the game world perceive the protagonist. “Over time, you will sketch the outlines of your captain’s personality, who will therefore not be confined to an archetype,” the developers explain. “Their identity will also be reflected in how certain characters react in their presence, and particularly in the epilogues. These will reveal your ultimate destination and that of your crewmates.”

This mirrors Commander Shepard’s complex role in Mass Effect, where players had to balance their duties as a Spectre, their public image, their relationships with politicians, and their bonds with crew members. The multifaceted nature of Shepard’s character made them compelling to roleplay, and The Expanse Osiris Reborn appears to be pursuing a similar approach while building on the rich lore of The Expanse universe. With the game’s definitive release scheduled for early 2027, fans of both the franchise and the space opera RPG genre have much to anticipate, though only time will tell if Owlcat Games can deliver on these ambitious promises.