How to make an ATM9 server (All the Mods 9)

1What an ATM9 server needs

What a ATM9 server needs

Pack version	1.1.1, released 12 Oct 2025
Minecraft	1.20.1
Loader	Forge 47.4.0
Java	17
Memory	8 GB, as Playkeeper suggests it
Mods on the server	418
Download	1.2 GB
Server files	Server-Files-1.1.1.zip, 1.1 GB
From	CurseForge, by ATMTeam, 14M downloads
Checked	28 Sep 2026, on CurseForge and with Playkeeper 0.4.4's install plan

Version 1.1.1, from 12 Oct 2025, is still ATM9's newest: the team's new releases go to All the Mods 10 now. On 28 Sep, a server made from its template on the published 0.4.4 loaded all 418 mods and its log said Done (47.086s)!.

2How much memory ATM9 needs

Playkeeper suggests 8 GB for its 418 mods, which gives Java 4.6 GB. ATM's server files ask for more: their user_jvm_args.txt starts Java at 4 GB and lets it grow to 8 GB, with Forge and the mods needing memory beside that.

• For a few friends, 8 GB is what New server offers.
• For 5 or more, the sizing guide gives a big modpack 24 GB.

3The one-click way

Playkeeper runs your server on a VPS you rent. Install it with one command:

1. 1

   Open the template below, or search New server › A modpack

   Either way it's ATM9 1.1.1 from CurseForge, with Forge and the memory it needs.

2. 2

   Create and start it

   Playkeeper downloads the pack's 1.2 GB, taking its mods from ATM's 1.1 GB server files and checking each file against CurseForge's hash.

3. 3

   Send friends the pack

   Share with friends on the Mods tab makes a page with the pack's version and their launcher's steps.

4What the server files decide

ATM's server files are the pack as its team runs it: 418 mods, all inside a folder called Server-Files-1.1.1. Playkeeper follows them both ways:

• What they have goes on the server, including mods CurseForge lets only its own app download. Each is checked against the SHA-1 CurseForge lists for it.
• What they leave out stays off, even when the pack lists it. Mekalus, a shader mod for players' games, stopped ATM9's first start until Playkeeper learned this.

5By hand, with ATM's server files

Download Server-Files-1.1.1.zip (1.1 GB) from the pack's files on CurseForge. Its start script installs Forge 47.4.0 the first time it runs.

# Java 17, then the server files in ./Server-Files-1.1.1
sudo apt install -y openjdk-17-jre-headless unzip
unzip Server-Files-1.1.1.zip && cd Server-Files-1.1.1
echo "eula=true" > eula.txt
ATM9_RESTART=false sh startserver.sh   # installs Forge, then starts

• Memory is in user_jvm_args.txt: -Xmx8G is the most Java may take, so the machine needs more than that.
• Restarts: the script starts the server again 10 seconds after it stops, unless ATM9_RESTART is false.
• Java: anything older than 17 stops it with "Minecraft 1.20.1 requires Java 17". ATM9_JAVA picks another Java.

On a new server the script also writes allow-flight=true, so flying items don't get players kicked, and max-tick-time=180000, so one long tick doesn't stop the server. Playkeeper leaves these to you: set them in server.properties on the Files tab.

6Friends join with the same version

Players install All the Mods 9 1.1.1 in the CurseForge app or Prism Launcher, then join your server's address. A player on another version is turned away with a list of the mods that don't match.

In Playkeeper, Share with friends on the Mods tab makes a page with the pack's version and their launcher's steps.