Arma 3: Steam Branches

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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 [1]_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.


Branches

Arma 3

This application (appID 107410) exists for Windows, with experimental port betas for Linux and 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 CautionSpecialProfilingAndTestingBranchArma3 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 Linux / Mac 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 CautionSpecialProfilingAndTestingBranchArma3 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 Linux / Mac 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 the profiling branch) enter the access code as follows:

app_update 107410 -beta profiling -betapassword CautionSpecialProfilingAndTestingBranchArma3 validate

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

quit