

The UJC spacesuit closely resembles the suits from Prometious the bloodworm Biophages shoot from pods that resemble facehugger eggs and Elias is from Faralon’s Hope, a name that sounds the same as Hadley’s Hope from Aliens.

In one case, a leech attached itself to Dani’s face exactly the same way a facehugger would. There are bodies stuck to walls, covered in a slimy organic matter from Biofphage secretions, as well as egg-like pods carrying leeches that attack you. The Callisto Protocol is packed with references to Ridley Scott's Alien Universe films, with loads of inspiration that went into the design of the creatures as well as the environment. These ominous gold masks look a lot like the masks from the secret society scenes in Stanley Kubrick’s 1999 film Eyes Wide Shut, starring Tom Cruise and Nicole Kidman.

You find out that it is not the Warden of the Black Iron Prison but rather an entire cult known as The Commonality, who in turn have conferences wearing masks to hide their faces. A huge eye-opener happens in the final moments of the game when you get to know exactly who is behind the Callisto protocol.
