It is the third installment in the Outlast series, serving as a prequel to the first two games and features test subjects in a mysterious Cold War experiment. The development team of the game had around 40 people. The Outlast Trials was teased in October 2019 and is not a direct sequel to Outlast 2. It is about test subjects for the Murkoff Corporation in a mysterious Cold War experiment that is set in the same universe of the previous games. However, it was announced in August 2021 that the game has been delayed to 2022 due to the COVID-19 pandemic.