In order to complete The Callisto Protocol, you will have to spend 12 to 14 hours

The Callisto Protocol horror game designer Glen Schofield recently revealed in an interview with Edge magazine that the

passing the game without alternative paths will take players approximately 12-14 hours.

He hopes that while exploring alternative options, players will actively discuss their findings:
“Paths appeared later in the game, but some of them are very steep. We do not disclose how many there will be and how to get them. Therefore, a thorough study will take some time for users.”

Horror developers have repeatedly said that they want to scare the players properly. Therefore, the project promises to be at least frightening.

The Callisto Protocol releases on December 2nd for PC, PS5, PS4, Xbox Series and Xbox One.