Designing The Creatures And Gore Of The Callisto Protocol

The Biophage, The Callisto Protocol’s monstrous antagonists, are as mysterious as they are deadly. To understand the design process behind the Biophage and the game’s copious amounts of gore, we spoke with Striking Distance’s Character Director Glauco Longhi to learn how the studio created nightmares it hopes will terrify players. 

Longhi tells us the Biophage was born out of the studio’s philosophical desire to create enemies grounded in reality while also applying their own creativity. Realism, he says, is his personal principle of what makes a horror monster effective.

“It has to feel grounded, it has to feel real,” Longhi explains.  “It doesn’t have to be real, but it has to feel real, right? This can be taken to mean many things. But in my opinion, it has to be interesting, and captivating, and intriguing, and maybe disgusting…but ultimately, you got to believe that it’s real, or it could be real. It’s that simple. [we’re] really try to hone into the believability of what we’re doing.”

Its artists looked up horrifying references materials such as infections and human deformations to ensure that they were delivering hyper-realistic results. By taking these realistic elements and applying their own personal twists, Striking Distances’ design team crafted adversaries Longhi describes as “very gross and interesting and dynamic.” 

The animal kingdom was a key inspiration for Biophage. Longhi explained that the Proboscis Worm, an insect infamous for vomiting its own intestines (here’s an example clip Longhi shared with us if you want to ruin your day) set a barometer for the level of disgust the studio wanted to achieve with its monsters. 

Striking Distance aims to capture that sense of brutality and realness in the Biophage. The game’s extremely violent death animations are designed to instill a potent fear of death. One such sequence came courtesy of a fearsome creature affectionately referred to as “Big Mouth” by the team. A humanoid creature sporting two gaping maws filled with jagged teeth, we watched its mouths put to good use in a demo where it clamped onto Jacob’s head, then shook it around like a dog playing with its favorite chew toy before tearing most of his skull off. It left behind a bloody, open cavity. His tongue was still there for an unsettling touch. Instead of players thinking “oh well, I guess I’ll just reload” the studio hopes people will actively want to avoid witnessing something so horrific a second time. 

For Dead Space fans, it may be natural to draw comparisons between the necromorphs and the biophage. Longhi told us that the team didn’t want to retread old ground and that it wasn’t a concern. 

“I think we were just going with our own vision for this game and trying to design whatever makes sense for this game that we’re making,” says Longhi. “So it’s more of a Callisto Protocol approach on designing the creatures rather than trying to, ‘oh, let’s not do this’, or ‘let’s do that’, or, you know, like, it’s more of, you know, going full steam ahead with what we think it’s going to work for this game.”

To Longhi’s point, designing such a creature requires more than just adding a ton of teeth, claws, and tentacles to make it scary. It’s also important to ensure creatures make sense for the world and are entertaining to blow apart from a gameplay standpoint.

Glauco describes biophage creation as an organic process that embodies, first and foremost, Glen Schofield’s vision and then the needs of the artists who initially designed a monster, animators who have their own ideas, and the combat team who may need a specific type of monster to fit a proposed gameplay mechanic. A monster like the Big Mouth began as a simple two-mouthed beast and evolved over time as different parties concocted ways it could be used in-game. Glauco states that they have never dropped a monster idea because it is too scary. They only did so when it made sense within the game. 

“It’s almost like an evolution of an animal,” explains Longhi. “It starts there and then he grows the limb and then it goes there and it starts growing and growing and growing. And then suddenly we see like, ‘wow, this is so cool. Let’s just keep it to the way it is.’ And then we stop, because we could keep going.” 

As for the biophage’s narrative origins, Striking Distance is keeping those details close to the vest. If players want to find out more about these terrifying foes, they will need to confront them. The Callisto Protocol will be available for PlayStation, Xbox and PC consoles on December 2. For more videos and exclusive features, be sure to check out our cover story hub.