All the Mods 9 - ATM9

What sets it apart

All the Mods 9 is the ATM team’s big all-in-one pack for Minecraft 1.20.1 on Forge. The authors say on CurseForge that it loads over 400 mods, and the site’s dependency list counted 435 when checked for this entry.

What separates it from a plain pile of mods is the pair of endgame targets the authors name: crafting the ATM Star and, for those who want something harder, the Gregstar. A large quest book sits alongside both.

The team’s guide site has ATM9 pages for mods including Allthemodium, Mekanism, GregTech, Apotheosis, Mystical Agriculture, Productive Bees and Powah, which gives a fair picture of where the pack’s weight sits.

Who it suits

It suits players who want a finished version of the ATM formula. The CurseForge page showed the last update as version 1.1.1 on October 12, 2025, so the pack looks settled rather than fast moving.

Anyone who wants a newer Minecraft version should look at ATM10 instead. The README also lists spin-offs for different tastes, including ATM9 No Frills and ATM9 To The Sky, which are separate packs.

Before you install

The team’s All The Guides site says ATM packs need a PC with at least 16 GB of system RAM for the best experience, and that most of their packs require 8 to 12 GB allocated. It points out that launchers allocate 4 GB by default and that the setting must be raised manually. This is general guidance across ATM packs. A figure specific to ATM9 is not documented on the pages read.

The guide site also mentions that ATM9 uses a few versions of Complementary Shaders.

Issues are tracked on GitHub. The README asks reporters to put the pack version at the start of the issue title and to list any mods they added.

Playing with friends

Official server files exist. CurseForge listed Server-Files-1.1.1 from October 12, 2025 as the latest.

The server help page on All The Guides says to get them from the CurseForge Files tab under Additional Files. Its prerequisites are a server with at least 6 GB of allocated RAM and the Java version matching the pack’s Minecraft version. The ATM9 example configuration shown on that page lists Java 17 with a 4 GB minimum and 8 GB maximum heap.

Setup, per the guide, is to run the included start script, let the first run complete, accept the EULA, and start it again. The guide warns against extracting into cloud-synced folders and suggests excluding the server folder from third-party antivirus tools.