Arma 3: Steam Branches

Overview

Arma 3 is distributed as several branches on Steam.

These branches are accessible by opening the application Properties in Steam client. In the BETAS tab, you'll find a drop-down menu with publicly available branches. Some branches require an access code to be input before appearing the list. Those codes are shared via channels such as Twitter and the forums when appropriate. You may need to restart the Steam client to see recently created branches.

After selecting a branch, Steam client will begin downloading the differences in data. It can be recommended to do a local file verification afterwards to be sure the correct update was downloaded. Note that Steam client does not allow you to maintain multiple parallel branches on your hard drive. Our Game Updater tool does allow this for certain branches.

Steam Branch Selection

Branches

Arma 3

This application (appID 107410) exists for Windows, with experimental port betas for Mac.

Branch Name	Branch Code	Access Code	Description
Main Branch	public	N/A	Primary and default build
Development Branch	development	N/A	a.k.a. Dev-Branch build
RC Branch	rc	Shared on Dev Hub during active RC tests	Release Candidate build test of imminent updates
Profiling Branch	profiling	N/A	Special performance + profiling build - alternative download of needed binaries possible from Google Drive
Legacy Branch	legacy	Arma3LegacyXYZ Where XYZ is the version, e.g. 150	Old build comparison of the second-last main build
Legacy Ports Branch	legacyports	Arma3LegacyPorts	Old build compatibility for Mac client ports
Creator DLC RC Branch	creatordlcrc	Arma3CreatorDLCRC Only available during active RC tests	Release Candidate build test for Creator DLC

Arma 3 Server

This application (appID 233780) exists for Windows and Linux.

Branch Name	Branch Code	Access Code	Description
Main Branch	public	N/A	Primary and default build
Contact Branch	contact	N/A	Default build with Contact expansion server data and A3C signature key - note that this data is not fully compatible with multiplayer and should only be loaded for advanced use cases
Creator DLC Branch	creatordlc	N/A	Default build with Creator DLC server data and signature keys
RC Branch	rc	Shared on Dev Hub during active RC tests	Release Candidate build test of imminent updates
Profiling Branch	profiling	N/A	Special performance + profiling build - alternative download of needed binaries possible from Google Drive
Legacy Branch	legacy	Arma3LegacyXYZ Where XYZ is the version, e.g. 150	Old build comparison of the second-last main build
Legacy Contact Branch	legacycontact	Arma3LegacyXYZ Where XYZ is the version, e.g. 150	Old build comparison of the second-last main build with Contact expansion server data
Legacy Ports Branch	legacyports	Arma3LegacyPorts	Old build compatibility for Mac client ports
Creator DLC RC Branch	creatordlcrc	Arma3CreatorDLCRC Only available during active RC tests	Release Candidate build test for Creator DLC

Arma 3 Tools

This application (appID 233800) exists for Windows.

Branch Name	Branch Code	Access Code	Description
Main Branch	public	N/A	Primary and default build
Development Branch	development	N/A	Dev-Branch build
Legacy Branch	legacy	Arma3ToolsLegacyXYZ Where XYZ is the version, e.g. 1024	Old build comparison of the second-last main build

Arma 3 Samples

This application (appID 390500) exists for Windows.

Branch Name	Branch Code	Access Code	Description
Main Branch	public	N/A	Primary and default build
Development Branch	development	N/A	Dev-Branch build
Legacy Branch	legacy	Arma3SamplesLegacyXYZ Where XYZ is the version, e.g. 1024	Old build comparison of the second-last main build

SteamCMD

To install different branches via SteamCMD follow these steps:

• Do the following with steamcmd according to Valve's official documentation:
  • Download steamcmd
  • Install steamcmd
  • Launch steamcmd
  • Log in to your account
  • Set an install location

⚠

The account has to be in possession of Arma 3 in order to download the playable branches. Server files can be downloaded even without an account.

• To download the dev branch for example, enter the following into the steamcmd window:

app_update 107410 -beta development validate

• If the branch is password protected (for example a legacy branch) enter the access code as follows:

app_update 107410 -beta legacyports -betapassword Arma3LegacyPorts validate

• The game is now being downloaded
• Once finished, log out with

quit