The developers shared their approach at the GDC talk.

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Sandfall Interactive revealed at GDC that Clair Obscur: Expedition 33 was built using Unreal Engine 5 Blueprints for all gameplay systems, with no traditional C++ code. The studio, which won Game of the Year 2025, accomplished this with only four programmers and a budget under $10 million, highlighting a resource-efficient approach to delivering a visually ambitious game.

Sandfall Reveals at GDC That Clair Obscur Was Built Using Blueprints