TL;DR
Arjan Brussee, co-founder of Guerrilla Games, is developing a new European-centric game engine called ‘The Immensive Engine.’ It aims to offer an alternative to US-based engines like Unreal and Unity, with a focus on European regulations and AI capabilities. The project is still in development, with more details to come.
Guerrilla Games co-founder and former Epic Games tech director Arjan Brussee is developing a new game engine, ‘The Immensive Engine,’ aimed at providing a fully European alternative to dominant US-based engines like Unreal and Unity.
Brussee, who also co-founded Boss Key with Cliff Bleszinski, confirmed that ‘The Immensive Engine’ is designed to be fully hosted and built by Europeans, complying with European rules and guidelines. He stated that the engine seeks to diversify development options outside the US-centric landscape, especially as creating detailed 3D worlds becomes increasingly important beyond gaming applications.
Brussee emphasized that current engines like Unreal are primarily designed for and by US companies, with interfaces that rely heavily on mouse-driven menus. His new engine aims to rethink this approach, integrating AI from the ground up to streamline development processes. Brussee noted that AI could significantly reduce the manpower needed for complex development tasks, describing it as a way to ‘do the work of ten or fifteen people.’
Why It Matters
This development is significant because it introduces the possibility of a European-developed game engine that aligns with regional regulations and values, potentially reducing reliance on US-based technology giants. It could influence the global game development ecosystem by offering more diverse options and fostering regional innovation, especially as AI becomes a central tool in software development.
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Background
Currently, the dominant game engines—Unreal, Unity, and others—are primarily developed by US companies, with limited European alternatives. Brussee’s initiative follows a broader industry trend toward integrating AI into game development, with companies like Krafton, Square Enix, and EA investing heavily in AI tech. The project reflects a desire within Europe to establish independent, compliant, and innovative development tools amid ongoing geopolitical and regulatory discussions.
“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 stage, specific features, release timeline, and potential industry adoption remain unclear. It is also uncertain how the market will respond to a new European engine and whether it will gain significant industry traction.

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What’s Next
Further updates are expected as Brussee and his team develop ‘The Immensive Engine.’ Potential demonstrations, beta releases, or industry partnerships could emerge in the coming months. Monitoring for official announcements will be key to understanding its progress and impact.

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Key Questions
When will ‘The Immensive Engine’ be available to developers?
There is no confirmed release date yet. Development is ongoing, with more details expected in the coming months.
How will this engine differ from Unreal or Unity?
It aims to be fully European-hosted, compliant with European regulations, and integrated with AI from the ground up to streamline development processes.
Why is a European engine important?
It offers regional independence, adherence to local standards, and the potential to foster European innovation in game development technology.
Will this engine be open-source or commercially available?
Details have not been disclosed; it is currently under development with no official distribution model announced.