massive multiplayer game server for Flash, Unity, HTML5, iOS and Android games, MMO, virtual worlds and communities

June 6, 2021

Community Edition v2.17

SmartFoxServer 2X Community Edition delivers full access to the platform for free and without time limits. It allows 100 concurrent users and provides 100% of the features!

The distribution includes:

  • the multiplayer server
  • the Administration Tool

The client API are not included; they can be downloaded separately here.

When you have finished downloading the main installer please consult our installation guide. Please also read the highlighted notes below.

SmartFoxServer 2X
Windows (all) 64bit installer
SmartFoxServer 2X
Linux/Unix 64bit installer
SmartFoxServer 2X
MacOS (10.8+) 64bit installer
  Version: 2.17.0
Release date: Jan 26th, 2021
Read the release notes

The Community Edition can be used in both non-profit and commercial projects provided that you show a readable “Powered by SmartFoxServer” notice in your main screen or application GUI. The official logo is available in the Extras section of this page.

In case of minor updates and additions to the server or its components after the main package release, a separate download link is provided in the Updates section of this page.

Updating the Client API to the latest version is recommended to take full advantage of the new features of SFS2X.


Server updates

No server patches have been released since the latest full package was published.

Official client API

The following list contains the links to download the latest versions of the official client APIs, developed and maintained by our team.
Setup instructions are available in the online documentation.

Experimental client API

The following list contains the links to other client APIs developed by our team, but for which we can only offer limited support only.

C++ API Download
Version: 1.7.5
Release date: Apr 3rd, 2018
Requires: SmartFoxServer 2X v2.0.1 or later
Recommended: SmartFoxServer 2X v2.10 or later
Read the release notes

Unofficial client API

The following list contains the links to other client APIs developed and maintained by third parties. Please note that we don’t provide direct support on these APIs, so please contact the developers directly (where possible).

Haxe API Website
Porting of the ActionScript 3 API to Haxe made by Vincent Blanchet (boorik)
Haxe API
w/ websocket support
Fork of boorik’s project (above) by Barış Çağrı Yıldırım (barisyild)
C++ API Dropbox
Modified C++ API by Yuejun Zhang
Improved compatibility with Unreal Engine 4 (4.20-4.22) – Windows/Android/iOS builds



The following packs provide the source code of all examples referenced in the SmartFoxServer 2X documentation. They range from simple applications showcasing a specific feature to fully featured multiplayer games.

Unity examples pack Download
Version: 1.3.1
Release date: Oct 3rd, 2019
Requires: Unity 2017.1+
Read the release notes
Read the

All the Unity examples are also available in the Unity Asset Store, collected in a single package featuring a launch panel to easily test them with a click. Go to the Asset Store by clicking on this link.

HTML5 examples pack
w/ binary protocol API
Version: 1.7.2
Release date: Jul 21st, 2020
Read the release notes

NOTE: 1) under Internet Explorer 11, when running the examples by double clicking their html file, the browser may show an alert preventing the JavaScript code to be executed – you can allow the blocked content as it does no harm; 2) due to local content loading, the Tris and Simple MMO World examples don’t work properly if their html file is loaded by double clicking it. Both issues do not occur if the examples are deployed to a web server.

Java / Android examples pack Download
Version: 2.0.0
Release date: Feb 23rd, 2021
Read the release notes
Read the documentation
iOS examples pack Download
Version: 1.2.0b
Release date: Feb 23rd, 2021
Read the release notes
Read the documentation
Flash examples pack Download
Version: 1.3.0
Release date: Nov 14th, 2013
Read the release notes
Read the documentation
Windows 8 / Phone 8
examples pack
Version: 1.0.0
Release date: Sep 24th, 2013
Read the release notes
C++ examples pack Download
Version: 1.4.0
Release date: Apr 19th, 2017
Read the release notes
Read the documentation

IMPORTANT: in order to expand the number of platforms and frameworks supported by SmartFoxServer 2X, we are looking for C++ developers willing to test the API in different scenarios and share their games to be published on our website as examples/demos. Please read this post for more informations.

Unreal Engine proof of concept Download
Version: 1.0.0
Release date: Jun 30th, 2015
This package contains a modified version of one of the examples provided with Unreal Engine 4. It is an experimental proof of concept showing how to integrate the SmartFoxServer 2X C++ API, connect to the server and exchange public messages.
A specific tutorial (also contained in the zip) provides in depth instructions on how to setup your Unreal project and interact with SmartFoxServer 2X.