Installation Guide

1. Overview

This guide will explain how to get ACE3 up and running.

2. Steam Workshop Installation

3. Manual Installation

1. Prerequisites

2. Install ACE3

  • Extract both CBA and ACE3 .zip files into your Arma 3 folder. By default it is located in:
    • 32-Bit - C:/Program Files/Steam/Steamapps/Common/Arma 3/
    • 64-Bit - C:/Program Files (x86)/Steam/Steamapps/Common/Arma 3/
  • After extraction you should have the @ace and @CBA_A3 folders inside your Arma 3 folder.

4. Launch Arma 3 with ACE3

  • Launch Arma 3 to start the official game launcher.
  • Click Mods and make sure the checkboxes next to ace and CBA_A3 are ticked. Arma 3 Vanilla Launcher
  • Click Play

5. Install ACE3 Optional components


Skip this step if you're not using additional mods. If you are, consult with your mission maker before installing any of these components. If you are a mod creator, please visit the Modularity and PBO Structure page for more information.

5.1 What do they do?

Optional components supplement 3rd party mods with ACE3 features, for example:

  • Optional weapon components make Advanced Ballistics possible, as well as the ability to use ACE3 weapon attachments with 3rd party weapons like RHS, HLC, etc.
  • Optional tracers component brings back ACE2 ball tracers.
  • Optional server component is used to load the userconfig files.

5.2 Which optionals should I use?

Only use the optional components that correspond with your mod-pack.

5.3 How to install these components?

  • In the description on the ace workshop page you will find a list of all optionals that come with ACE3.
  • Open the ones you’re interested in and click on their respective “Subscribe” buttons

5.3.1 Alternative method to install optionals

  • Inside your Arma 3\@ace\ folder, you’ll find the optionals and addons folders.
  • Inside the Arma 3 folder create a new folder e.g. Arma 3\@ace_optionals\ and a subfolder Arma 3\@ace_optionals\addons
  • Copy and paste the relevant .pbo and .bisign files from the Arma 3\@ace\optionals folder into the Arma 3\@ace_optionals\addons folder.