Creative Assembly says Alien: Isolation 2's custom tech enabled a 'realistic' atmosphere Unreal Engine 5 couldn't — 'We felt that a custom solution would give us that perfect frame response that you want in that kind of really, really dark environment'

The studio used custom tech to enhance the game's darker environments

by · TechRadar

News By Demi Williams Contributions by Rob Dwiar Published 22 September 2026

(Image credit: Creative Assembly)

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  • Principal environment artist Archie Whitehead says Alien: Isolation 2's custom lighting and audio tech allowed it to create a more "realistic" atmosphere
  • He says just using Unreal Engine 5 wasn't enough, since the engine is "optimized for usually quite bright scenes"
  • Custom lighting allowed the team to design "reactivity" in the environment

Alien: Isolation 2's custom audio and lighting technology has enabled Creative Assembly to create a more authentic atmosphere that it couldn't fully achieve with just Unreal Engine 5.

In an interview with TechRadar Gaming at Gamescom, Creative Assembly principal environment artist Archie Whitehead and principal UI artist Laura Mouther shared more about developing the sequel with Unreal Engine 5 and the studio's custom technology, which it previously told us was an "evolution" of what fans are familiar with.

"For horror, audio and lighting are the two Powerman things," Whitehead said. "Unreal gave us a great base, but we felt that to do certain things, it [custom tech] really, really helps."

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One of those things, particularly with lighting, was "reactivity," which would offer visual effects from things like weather and other environmental assets, creating a more realistic atmosphere.

"We wanted a thunderclap, like fire flickering, sirens spinning, all of that stuff," he continued. "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 [UE5's global illumination and reflections system] is optimized for usually quite brighter scenes."

The developer explained that the team struggled with showcasing metals in the game's darker exterior environment, saying, "Metals in virtual worlds are really difficult."

He added, "The color of metal is actually just what's being reflected, right? And the problem is all of our scenes are really dark, so for the metal to behave properly, it's quite a tricky balance to strike. So that's one of the things that our lighting system helps us with."

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