The Callisto Protocol is a third-person horror game set in 2320, with its action unfolding within the confines of the Black Iron prison colony on Jupiter’s moon Callisto. While that set-up mightn’t immediately scream PUBG to onlookers, the connection came from the fact developer Striking Distance was explicitly established by PUBG: Battlegrounds publisher Krafton to create narrative-driven games that would expand the universe introduced in the battle royale hit.
