Creative Assembly is developing its own custom technology for Alien: Isolation 2 'to really fine tune the experience and create exactly the best Alien experience'

Creative Assembly has confirmed that Alien: Isolation 2 will be built with Unreal Engine 5, but the team is also developing custom technology.

source https://www.techradar.com/gaming/creative-assembly-is-developing-its-own-custom-technology-for-alien-isolation-2-to-really-fine-tune-the-experience-and-create-exactly-the-best-alien-experience