We Love It's Guide to…
A Source 2 creation platform where you browse community-made games or build and publish your own with C# tools.
Released 28 Apr 2026
Create C# Games
Build 3D Scenes
Hot-Reload C# Code
S&box is a game creation platform built on the Source 2 engine. Play, create, and share games, explore community creations, and experience endless sandbox fun with powerful modern tools.
Developed by Facepunch Studios · Published by Facepunch Studios
s&box is a platform for playing and making games. Players can browse community-created experiences, while creators use the built-in editor to make their own projects.
The community library includes experiences across genres such as shooters, roleplay, racing, platformers, and horror. You can join games with friends, and the platform also includes a sandbox mode for building and experimenting.
Creators can build scenes, script with C#, and use real-time hotloading to test changes. They can publish their games on the platform; player cosmetics carry across games, and a Play Fund ties creator earnings to playtime.
In this helpfulness-selected sample, many reviewers criticize the limited or uneven game selection, performance, monetization, and how the platform compares with Garry’s Mod. Some players nevertheless point to its potential and enjoy the creation tools, scene editing, a handful of arcade-style modes, or playing with friends.
S&box is a game creation platform built on Valve's Source 2 engine.
Play, create, and share games, explore community creations, and experience endless sandbox fun with powerful modern tools.
Hundreds of games made by the community - shooters, roleplay, racing, platformers, horror, and stuff we don't even have a name for yet. No installing or subscribing, just click to play. Party up with your friends and they can play too, no need to mess around setting up servers.
Anyone can create games using our intuitive modern editor, creating scenes with a standard scene system and a C# API with powerful hotloading.
You can publish your games directly to the platform where everyone can play it at the click of a button.
You can earn through our Play Fund from players playing your games, directly funded from cosmetic purchases.
Or (coming soon...) you can take it one step further and publish to Steam as a standalone title, with no engine royalties.
Source 2 Engine: Built on the same engine as Half-Life: Alyx and Counter-Strike 2.
Multiplayer: Party up with your friends and jump into games straight away, no servers needed.
Game Library: Hundreds of community-made games across every genre, always growing.
One Click Play: No installing or subscribing - browse and jump into any game instantly.
Constantly Updated: Like Garry's Mod and Rust - big content updates on a fast cycle.
Customization: Personalize your player with cosmetics that carry across every game.
Game Editor: Create your own games in our intuitive editor with C# scripting and real-time hotloading.
Play Fund: Creators earn money when people play their games.
Publish to Steam: Coming soon... take your game standalone on Steam, royalty-free.
| Platforms | Windows |
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| Age ratings |
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| Players | From 1 (maximum not specified) |
| Play modes |
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| Other modes |
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| Multiplayer | s&box supports single-player, online PvP, LAN PvP, online co-op, and LAN co-op according to the listed features. The store text says players can party up with friends and jump into games without setting up servers. Reviews describe player-hosted lobbies and built-in Steam P2P networking, with dedicated servers also described as possible by a reviewer. |
| Multiplayer & mods | Multiplayer is heavily tied to community-made games and user-created content. The platform includes a level editor and Steam Workshop, and reviews state creators can host creations publicly for testing. One review also says hot-reloading changes can work during multiplayer in the editor. |
| Controller required | No |
| DRM / EULA |
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| Content notices |
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| AI disclosure | This game contains user-generated content, which may contain AI generated stuff. We don't AI generate anything. |
| AI disclosure categories |
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| Website | Official website |
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