TL;DR
Arjan Brussee, co-founder of Guerrilla Games, announced he is developing a new European-made game engine called ‘The Immensive Engine.’ This engine aims to offer an alternative to US-centric engines like Unreal and Unity, with integrated AI features. The project highlights a push for more European control in game development tools.
Guerrilla Games co-founder and former Epic tech director Arjan Brussee has announced he is developing a new game engine called ‘The Immensive Engine,’ designed to be a fully European alternative to industry giants like Unreal and Unity. This initiative aims to provide European game developers with more localized and compliant tools, marking a significant step toward independence in game development technology.
Brussee, who also co-founded Boss Key with Cliff Bleszinski, revealed that ‘The Immensive Engine’ will be built to meet European regulations and guidelines, addressing a current gap in the industry where most major engines are US-based. The engine is intended to support the creation of complex 3D worlds, not only for gaming but also for other applications, reflecting broader industry trends.
He emphasized that the engine will incorporate AI from the ground up, differentiating it from existing engines like Unreal, which Brussee criticized for their menu-driven development processes. Brussee highlighted that AI integration could significantly reduce development time, with a framework capable of automating tasks typically requiring multiple developers. Several major companies, including Krafton, Square Enix, and Electronic Arts, have invested heavily in AI, indicating industry-wide interest in this technology.
Why It Matters
This development is significant because it represents a move toward European independence in game development infrastructure, potentially reducing reliance on US-based engines. It could influence industry standards, especially if the engine proves to be competitive in features and usability. The focus on AI integration also signals a shift in how game development might evolve, with automation and intelligent systems playing a larger role.

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Background
Currently, the global game industry predominantly relies on engines like Unreal, Unity, and proprietary tools, most of which are developed outside Europe. Brussee’s initiative responds to a perceived lack of fully European-hosted engines that comply with European rules, which could be crucial for privacy, data sovereignty, and regulatory reasons. The move aligns with broader industry trends toward AI-enhanced development tools, a field where major players are investing heavily.
“No one is currently making an engine that is fully European-hosted, built by Europeans, and complies with European rules and guidelines.”
— Arjan Brussee
“Creating usable 3D worlds is becoming increasingly important, certainly for purposes other than just gaming.”
— Arjan Brussee
“If you are smart and know how to put a good framework of AI agents to work, you can do the work of ten or fifteen people.”
— Arjan Brussee

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What Remains Unclear
Details about the engine’s current development status, release timeline, and specific technical features remain unclear. It is also uncertain how the engine will perform relative to established competitors or how widely it will be adopted.

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What’s Next
Brussee and his team are expected to continue developing ‘The Immensive Engine,’ with potential beta releases or demonstrations planned in the coming months. Industry observers will be watching for early technical previews and partnerships with European studios.
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Key Questions
When will ‘The Immensive Engine’ be available to developers?
It is not yet confirmed when the engine will be publicly released; development is ongoing, with potential previews in the near future.
How will this engine compare to Unreal or Unity in features?
Specific features are still under development, but the engine aims to integrate AI from the ground up and meet European regulatory standards, potentially offering unique advantages.
Why is a European game engine important?
It would provide European developers with tools that are fully compliant with regional regulations, data sovereignty, and potentially reduce reliance on US-based technology providers.