SmartFoxServer is a comprehensive SDK for rapidly developing multiplayer games and applications with Unity, HTML5, Godot, iOS, Android, Java, UWP, Adobe Flash/Flex/Air, C++ and more.
SmartFoxServer comes with a rich set of features, an impressive documentation set, tens of examples with their source, powerful administration tools and a very active support forum.

Born in 2004, and evolving continuously since then, today SmartFoxServer is the leading middleware to create large scale multiplayer games, MMOs and virtual communities.
Thanks to its simplicity of use, versatility and performance, it currently powers hundreds of projects all over the world, from small chats and turn-based games to massive virtual worlds and realtime games.

April 15th, 2024SmartFoxServer 2.20.0 is out!

We have just released SmartFoxServer 2X 2.20.0, which comes as a patch for all previous 2.19.x releases. The version updates the embedded Tomcat (websocket/BlueBox), providing several bug and security fixes.

This release also improves the communication speed with the License Server and adds a new setting for managing the the User’s packet queue when it is maxed out.

Please, make sure to read the full release notes included with the download itself.

Download SFS2X update 2.20.0

July 20th, 2023Small API Update for all client platforms

We have just released a small update for our client API, which addresses the caching of UserVariables when users enter and leave multiple Rooms. A recent bug submission has pointed to a specific situation in which a UserVariable would remain in the cache, potentially wasting some memory.

You can read more in the related support forum discussion and download the latest release from our API Download page.

July 4th, 2023New Godot 4.x Examples available!

We have launched a new tutorial series for the Godot engine 4.x using our C# Client API.
The example pack contains five examples of increasing complexity with source code and detailed tutorials:

May 30th, 2023HTML5/Javascript API Cluster support is ready

We have now added SmartFoxServer Cluster support to our offical HTML5/JS client API.

You can obtain the new release from our client API download page and learn more on how to build a Cluster client from the Overcast documentation.

April 27th, 2023Updated examples pack for Unity

We have updated the Unity examples pack and tutorials for SmartFoxServer 2X.

What’s new?

  • New Shooter example and tutorial, substituting the outdated First Person Shooter example.
  • All examples now feature an Editor window providing setup instructions; all tutorials now reference those instructions.
Read all the news