From Bohemia Interactive's [Website](https://arma3.com/):
> Experience true combat gameplay in a massive military sandbox. Deploying a wide variety of single and multiplayer content, over 20 vehicles and 40 weapons, and limitless opportunities for content creation, this is the PC’s premier military game. Authentic, diverse, open - Arma 3 sends you to war.
- A valid, **real** Steam account, with **Steam Guard turned off**, is required to install the server (default "anonymous" login cannot be used). For security reasons it is [recommended by Valve](https://developer.valvesoftware.com/wiki/SteamCMD#With_a_Steam_account) that you create a new Steam account just for your dedicated servers. This account *does not* need to own Arma 3.
- For automatic Steam Workshop mod downloading to work, the Steam account *does* need to own Arma 3. However, this is optional functionality, and mods can be manually uploaded to the server if desired. Hosts may feel free to change the "Disable Mod Downloads/Updates" variable to `1` if they would not like to offer it's functionality to clients.
Default server ports are listed below, but the Main port can be any port. There are three more ports after the Main port are relative to the Main port (For example: The BattlEye port is always 4 ports higher than the main port). **All four ports are required for normal server behavior.** It is [recommended](https://community.bistudio.com/wiki/Arma_3:_Dedicated_Server#Port_Forwarding) that each server be 100 ports separate from each other.
ARMA 3 is mainly CPU intensive. Contrary to popular belief, the server binary *can* run on multiple cores/threads. However, it's ability to manage asynchronous tasks and hyperthread is *very* limited, meaning additional cores/threads reach diminishing returns very quickly. In addition, it's ability to utilize all of the CPU allotted to it for AI processing seems to be limited as well. Therefore, a Headless Client ***and*** a properly written mission file are highly recommended if large amounts of AI units will be used.
This server requires just under 10 GB of disk space to safely run properly with no mods. However, mods can easily increase disk usage to 50 GB or more, depending on how many are downloaded.
The following are highly recommended variable modifications you can make to the egg after importing it to your panel. While viewing this egg, simply go to the "Variables" tab of the egg editor to make these changes.
- To make deploying servers easy (**or if you are using WHMCS**), it is recommended to edit the default values of "Steam Username" and "Steam Password" to your Steam account dedicated for hosting. This will make all newly installed servers use these credentials. **DO NOT** make these fields visible to the end user so that they can use their own Steam accounts; the panel will save their Steam credentials in **plain text**, which is a BIG NO NO for security and privacy.
- If you would like to restrict the maximum number of players that can join your client's server, you can change the permissions of the "Max Players" variable so that clients can only view this value (and not edit it). It's default value can also be changed, or the value can be changed on a server-by-server basis as desired.
If you already have an Arma 3 egg installed on your panel, there are a couple things to consider before updating to this egg:
- The Startup Command has changed, but Pterodactyl currently does not update this across all your existing servers. Servers will still boot with their old Startup Command, but the new HTML Modlist feature will not work, and depreciated variables for config files will be used. Servers will have to be manually updated to the new Startup Command via the Startup tab.
- Startup Variables have been completely rehauled. While most important existing variables have retained their Environment Variable names, a lot of their titles and order have been adjusted. Simply updating your existing egg with this egg may lead to Startup Variables being terribly out of order and cluttered. Therefore, the following steps are recommended to avoid this:
1. Change the name of your existing Arma 3 egg to "Arma 3 (Old)".
2. Install this updated egg as a new egg in your nest.
