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Facepunch/sbox-public

s&box is a modern game engine, built on Valve's Source 2 and the latest .NET technology, it provides a modern intuitive editor for creating games

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What it does

s&box is a game creation platform built on top of Valve's Source 2 engine (the same technology behind games like Half-Life: Alyx), allowing developers to build and publish their own games using modern tools and a visual editor. Think of it like a game-making studio built inside an existing, proven game engine, lowering the barrier for teams to create and ship playable experiences.

Why it matters

With nearly 3,700 stars and an active contributor base, this project signals growing demand for accessible, high-quality game development platforms that sit between complex professional tools and simpler hobbyist options — a market segment that Unity and Roblox have proven is commercially significant. For founders and investors, it represents a bet on community-driven game creation ecosystems, where the platform's value grows as more developers build and share games on top of it.

3Active

On the radar — signal detected

Stars
3.9k
Forks
286
Contributors
41
Language
C#

Score updated Feb 21, 2026

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