How to install All the Mons (ATMons): Complete Client & Server Guide
All the Mons, also known as ATMons or AllTheMons, brings together the All the Mods 10 modpack and the world of Cobblemon. This guide explains how to install All the Mons on your computer with CurseForge, then on a Minecraft server managed in OuiPanel, the OuiHeberg game panel. You can then play together on your own server.
Installation guide: All the Mons (ATMons)
The installation takes three stages.
Install the modpack on your computer with CurseForge.
Install the modpack on your server from OuiPanel.
Join the server from the game.
Video tutorials also show the installation, in English, in French and in Spanish.
Modpack information
| Feature | Detail |
|---|---|
| Name | All the Mons (ATMons) |
| Creator | ATMTeam |
| Minecraft version | 1.21.1 |
| Mod loader | NeoForge |
| Type | Adventure, tech, magic, quests, Cobblemon |
About All the Mons
All the Mons fully integrates Cobblemon into All the Mods 10 (ATM10). It combines more than 300 well-known mods with a complete Pokémon experience.
The classic ATM10 progression, with Pokémon quests and mechanics.
Unique trainer battles and structures specific to the pack.
The ATM Star, the endgame goal, which requires mastering tech, magic and the capture of rare Pokémon.
Custom recipes, such as Poké Balls crafted through automated processes and modded materials.
PART 1: Client installation (CurseForge)
Client requirements
8 GB of RAM allocated to the game, 12 GB recommended for smooth play.
Java 21, required by Minecraft 1.21.1.
Install the modpack
Launch the CurseForge app.
Open Minecraft, then the Browse tab.
Search for
All the Mons.Find the All the Mons - ATMons pack by ATMTeam and click Install.

Set the RAM
ATM packs are large. To avoid crashes, give the game more memory.
Open the CurseForge settings (gear icon at the bottom left).
Click Minecraft in the sidebar.
Scroll down to Java Settings.
Set the memory slider to at least 8192 MB (8 GB). With 16 GB of RAM on your PC, choose 10240 MB (10 GB).
PART 2: Server installation (OuiHeberg)
Server requirements
A OuiHeberg Minecraft server with at least 8 GB of RAM, ideally 12 to 16 GB.
Access to OuiPanel, at dash.ouipanel.com.
Don't have a server yet? The modpack page lists suitable plans.
Prepare the server
Log in to OuiPanel and open your server.
In the console, click Stop and wait for it to stop completely.
Recommended: create a backup in Backups › Create backup.

Install the modpack with the Modpack Manager
In the side menu, open Versions/Modpacks › Modpack Manager.
On the Checked by OuiHeberg tab, type
All the Monsin Modpack name, then click Search.On the All the Mons - ATMons tile (MC 1.21.1), click Install.
In the Install a modpack window, pick the Modpack version, then click Install.
The panel shows "Installation started". Follow the progress in the console.

For a checked modpack, the server is reinstalled and its current files are lost. Keep a backup of your world if it matters to you.
All the Mons is also listed in the Public catalogues tab, with the Provider filter set to CurseForge. OuiHeberg doesn't test those modpacks. Their install window offers the Erase the server files option, useful for a clean install.

Set Java 21
Open Configuration › Server Settings.
In the Server Launch card, check that System version is set to Java 21.
If needed, pick Java 21 in the list, then click the check mark to the right of the field to save.

First start
Go back to the console and click Start.
If OuiPanel shows the Minecraft EULA window, click Accept EULA.
Wait. The first start can take 5 to 10 minutes while the pack generates the ATM structures and Pokémon spawns.
Join the server
In OuiPanel, open Global View and copy the Main address, for example
203.0.113.10:25565.Launch the game from CurseForge.
In the Minecraft menu, click Multiplayer, then add a server with that address.
Connect.

Troubleshooting
The game closes while loading
It's almost always a lack of RAM. Raise the allocation to 10 GB in CurseForge.
What is NeoForge?
NeoForge is the successor to Forge for recent Minecraft versions. The modpack installs it automatically, there's nothing for you to do.
I can't see any Pokémon
Check that the server has finished starting. In a world that already existed, explore new chunks to see the Pokémon structures.
Need help?
Open a ticket from Tickets › Open a Ticket, or from the Contact support tile at the bottom of your server's page in the client area. You can also ask your question on the OuiHeberg Discord.
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