Fio: 3D World editor/game engine – inspired by Radiant and Hammer
A liminal brush-based CSG editor and game engine with unified (forward) renderer inspired by Radiant and Worldcraft/Hammer Compact and lightweight (target: Snapdragon 8CX, OpenGL 3.3) Real-time lighting with stencil shadows without the need for pre-baked compilation
In plain words
Fio is a brush-based 3D world editor and game engine inspired by classic tools like Radiant and Hammer. It uses constructive solid geometry for level design with a unified forward renderer that supports real-time lighting and stencil shadows without requiring pre-baked compilation. The engine is designed to be compact and lightweight, targeting lower-end hardware like the Snapdragon 8CX while maintaining OpenGL 3.3 compatibility.
written from the facts on this page · September 2026
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