1. Open Arma 3 Workshop and select the scenario tag.
  2. Find a scenario you like.
  3. Click subscribe on to subscribe to a scenario. It will automatically download when the game is started.
  4. Open the game and navigate to Play > Scenarios.
  5. The subscribed mission will be downloaded and found under the Steam Subscribed Content.
  1. Open Arma 3 Workshop and select the mod tag.
  2. Find a mod you like.
  3. Click subscribe on to subscribe to a mod.
  4. Start Arma 3 from your Steam Library, that will open Open Arma 3 Launcher.
  5. Subscribed mods will be downloaded automatically.
  6. Click the MODS tab.
  7. Downloaded mods are automatically loaded. If you need to unload a mod, click the checkbox.
  8. Press PLAY to launch Arma 3 with selected mods.
  1. Start the game.
  2. Open the EDITOR from the main menu.
  3. Create your splendid scenario and save it.
  4. Go to Scenario menu > Publish to Steam Workshop.
  5. In the list on the right choose [Unpublished] to publish the scenario as a new item, or select an existing one to update it.
  6. Specify name, tags, description, visibility and image.
  7. Agree with the Steamworks license by checking the box.
  8. Click on the Publish button or the Update button to upload your scenario to Steam Workshop.
  1. Have a PBO ready.
  2. Install the free Arma 3 Tools application.
  3. Launch Arma 3 Tools.
  4. Open Publisher.
  5. Choose to publish as new or overwrite an existing published item by clicking the proper item in the list.
  6. Provide a PBO to be published.
  7. Specify tags, description, visibility and image.
  8. Agree with the SteamWorks license.
  9. Publish your mod to Workshop.


Arma 3 Workshop now support items of unlimited size.

For further details, visit the detailed documentation for Launcher or Publisher.