In an interview with IGN, Glen was asked about topics such as its relations in nature to the Dead Space series, instance, among other things. You can watch the full interview below (credit goes to IGN for the footage).
Initially asked about how similar the game is to Dead Space, Glen replied: Something interesting that was brought up midway through the interview was how The Callisto Protocol was formerly tied to PlayerUnknown’s Battlegrounds (PUBG for short). In response, Glen said: There are a few other questions Schofield was asked, and you can find them in the short interview linked above, as well as small snippets of gameplay too. The Callisto Protocol will release on December 2nd, 2022, for PlayStation 5, PlayStation 4, Xbox Series, Xbox One, and PC via Steam. And so, we were late to announcing it, because it really happened a while ago, but we just didn’t want people getting confused, so we came out with the announcement that it’s no longer in there.