Guerilla Games co-founder and Epic veteran building ‘a European alternative’ to Unreal Engine

Arjan Brussee, co-founder of Guerrilla Games and former Epic technical director, says he is building The Immense Engine in the Netherlands.

The engine is being designed as a fully European-hosted platform that complies with European rules and uses AI-driven development principles.

Brussee positions it as an alternative to dominant U.S. and Chinese engines such as Unreal Engine and Unity.

Beyond gaming, the project could support 3D simulation use cases in defense, logistics, and other industries.