The third-person survival horror game is the latest title from the South Korean company behind PUBG: Battlegrounds and TERA, as well as the debut game from its California-based development studio Striking Distance.
It is the brainchild of Dead Space creator and Striking Distance CEO Glen Schofield, and it challenges players to escape a maximum security prison on Jupiter’s moon Callisto in the year 2320, after a mysterious outbreak begins transforming its inmates into monstrous creatures.
It was released on Friday, and reviews were posted an hour and a half before the Korea Exchange closed. Krafton fell 8.41% and closed at its lowest price since November 11.
On the review aggregation website Metacritic, the game currently has scores of 75 (Xbox Series X/S and PC) and 76 (PS5).
While the scores were respectable, Serkan Toto, CEO of Tokyo-based games industry consultancy Kantan Games, suggested they were lower than some investors had hoped for.

“TCP’s metacritic score is in the mid 70s,” he wrote, “apparently too low for Krafton investors hoping the IP could become a new pillar for the PUBG company.”
Callisto Protocol has received a variety of reviews, including a 9/10 from PCGamesN, a 7/10 from IGN, and a 5/10 from Gamespot.