Creative Assembly didn't have enough UE5 for Alien: Isolation 2, so the studio used its own technology

Developers of Alien: Isolation 2 believe that Unreal Engine 5 alone isn't enough to build a truly convincing horror game. That's why Creative Assembly decided to build its own lighting and audio technology on top of it.

According to principal environment artist Archie Whitehead, these two elements matter more than anything else for horror. The custom lighting system allows for faster reactivity to what's happening around the player – thunderclaps, fire flickering, sirens spinning, and other effects need to respond almost instantly.

Unreal gave us a great base, but we felt that to do certain things, it [custom tech] really, really helps.

We wanted a thunderclap, like fire flickering, sirens spinning, all of that stuff. We felt that a custom solution would give us that perfect frame response that you want in that really, really dark environment.

You know, Lumens is optimized for usually quite brighter scenes.

Metal surfaces turned out to be a separate challenge. In dark scenes, metal reflects the surrounding light, so the team had to find a balance to make it look natural.

The audio system has also evolved compared to the first Alien: Isolation. It accounts for the spatial layout of rooms – sound from a neighboring room or a vent travels through the environment and bounces off surfaces. As a result, even a familiar noise can sound completely different depending on where the player stands.

Alien: Isolation 2 will launch on PS5, Xbox Series, Nintendo Switch 2, and PC.