Former Epic Games Exec Building European Alternative to Unreal Engine

Arjan Brussee, co-founder of Guerrilla Games and former Epic Games Unreal Engine product lead, is building the Immense Engine as a European alternative to Unreal Engine. He says the engine will be hosted in Europe, comply with regional rules, and potentially extend beyond gaming into 3D simulations for defense and logistics, with AI integrated into the development stack. The article is conceptual and early-stage, so near-term market impact appears limited.

Analysis

The investable signal here is not "another game engine," but the increasing value of sovereign, AI-native development stacks for regulated industries. If a credible European-hosted engine emerges, the first-order winner is not consumer gaming incumbency but EU enterprise customers in defense, industrial simulation, and public-sector digital twins that increasingly care about data residency, procurement compliance, and export-control optics. That creates a wedge into a market Unreal has historically dominated on performance, but not necessarily on political friction or deployment flexibility.

The second-order effect is pressure on middleware and adjacent tooling rather than on Epic immediately. A new engine that bakes in AI-assisted workflows could compress the labor intensity of asset creation, level design, and iteration, which is bullish for small studios and internal simulation teams, but bearish for point-solution vendors whose pricing depends on fragmented workflows. The key watch item is whether Immense can attract a credible ecosystem of plugins, training content, and integrators; without that, adoption stays in pilot mode for 12-24 months and remains more of a strategic option than a revenue threat.

Consensus is likely overestimating near-term competitive damage to Unreal and underestimating the optionality around defense-adjacent use cases. The real monetization path may be enterprise simulation contracts and government-sponsored localization mandates, not indie game uptake. If the AI tooling claim proves real, it could lower development headcount by roughly 20-40% in early-stage projects, which is enough to change budget allocation and vendor selection, but only after proof points from shipping customers.

Key Decisions for Investors

• No direct equity expression in the article’s current form; treat as a 12-24 month thematic monitor rather than an immediate trade.
• Long EA / short a basket of EU software integrators exposed to defense simulation procurement risk for 6-12 months; thesis is that in-house, AI-native engines can pull margin out of service-heavy vendors before taking share from game publishers.
• If an investable pure-play or listed beneficiary emerges in European defense simulation / digital twin software, consider a starter long on first customer wins with a 2-3x upside if procurement converts from pilot to framework agreements.
• Use unrealized volatility in gaming/AI infrastructure names to buy optionality only after concrete ecosystem evidence; otherwise fade headline-driven enthusiasm in the absence of a distribution or tooling network.
• Set a catalyst watch for EU public-sector and defense pilot announcements over the next 2 quarters; that is the earliest window where the narrative can translate into revenue visibility.