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Dev tools · April 6, 2026

Fio

Quake/Hammer-style level editor with built-in game engine.

What it does

A real-time liminal Quake/Hammer-style level editor with built-in game engine. Optimised for mobile CPUs * Build a level, hit play, and walk around instantly * Real-time lighting with stencil shadows * Unified Forward Renderer * Classic brush-based workflow * Fog, glass & water shaders * Entity I/O system (logic, triggers, lights, speakers) * Terrain generation * OBJ model support * Supports Quake-style nodraw surfaces * Fully modular and open source (MIT License)

Does the same job

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