How to install Easy Multiplayer

Here are the instructions to install modpack to various launchers.

Supported

Modrinth App

App version 0.6.2 or higher required.

1. Under "Popular packs" section, hover on "Easy Multiplayer"

2. Click ⤓ Install

3. The modpack will now install.

4. Once installed, hover on the created instance under "Jump back in"

5. Click ▶️ button to play.

Prism Launcher

You need Java 21 to play the game.

1. Click Add Instance

2. Select Modrinth tab from the left

3. Select "Easy Multiplayer"

4. Click OK

5. The modpack will now install.

6. Once installed, double-click the icon to play.

Steam Deck + Prism Launcher

1. With Steam Deck turned on, hold down ⏻ (power) and tap Switch to Desktop.

2. From the taskbar, select 👜 "Discover".

3. Tap the searchbar on the top left corner, then press ❎ to open the on-screen keyboard.

4. Search for "Prism Launcher" and tap Install on the first result.

5. Launch it and go through its initial setup process, then close it.

6. Open Steam app, select Games → Add a Non-Steam Game to My Library... → select Prism Launcher → ADD SELECTED PROGRAMS.

7. Close Steam and launch Return to Gaming Mode.

8. Launch Prism Launcher from your game library.

9. Tap Add Instance

10. Select Modrinth tab from the left

11. Select "Easy Multiplayer"

12. Click OK

13. The modpack will now install.

14. Once installed, double-tap the icon and wait.

15. Tap Options... → Controls... → Controller Settings...

16. Select a controller, then Done → Done → Done

17. The game is now set up and you can just launch it from your game library from now on.

18. Bonus: if you want a better icon in your game library, follow these instructions.

P.S. If you get Deck-specific issues, try asking on r/SteamDeck .

MultiMC

You need Java 21 to play the game.

1. Click Add Instance

2. Select Modrinth tab from the left

3. Select "Easy Multiplayer"

4. Click OK

5. The modpack will now install.

6. Once installed, double-click the icon to play.

Not supported

GDLauncher

Due to technical limits and issues, GDLauncher is no longer supported. It is recommended to migrate to Prism Launcher:

1. Install and run Prism Launcher

2. Click Add Instance

3. Select Modrinth tab from the left

4. Select "Easy Multiplayer"

5. Click OK

6. The modpack will now install.

7. Once installed, click the Folder button on the left.

8. Open GDLauncher

9. Right click on your previously used instance → Open Folder

10. Copy the important files and folders over:

    • saves for your local worlds

    • resourcepacks, if you use any

    • screenshots

    • servers.dat for your multiplayer servers

    • options.txt, if you want to keep your vanilla option changes

11. Launch the instance on Prism and confirm everything is correct

12. Uninstall GDLauncher

Pojav Launcher

Pojav Launcher is not yet supported due to drawbacks (long installation process, high energy usage, performance may not be better etc), but is being considered.

ATLauncher

Not to be confused with TLauncher.

ATLauncher is currently not supported simply because the interface is confusing and complex. There have been discussions with its developer to improve this and it may be considered in the future.

PolyMC

PolyMC is compromised and you should uninstall it immediately!

To migrate to Prism Launcher (a safe fork of PolyMC), follow these instructions:

1. Uninstall PolyMC

2. Install Prism Launcher

3. Launch it and pay attention to the prompt you get:

   1. It looks like you used PolyMC before. Do you want to migrate your data to the new location of Prism Launcher?

      • Click Yes and the migration will complete.

   2. It looks like you used PolyMC on Windows before. Do you want to migrate your data to the new location of Prism Launcher?

      • Click Yes and the migration will complete.

   3. Old data from PolyMC was found, but you already have existing data for Prism Launcher. Sadly you will need to migrate yourself. Do you want to be reminded of the pending data migration next time you start Prism Launcher?

      • Click No and follow manual migration instructions below.

4. If needed, update or install the modpack again

5. To run the modpack, double click the Easy Multiplayer icon

Manual migration

1. Close Prism Launcher

2. Go to one of these directories according to your operating system:

   • Portable (Windows/Linux): PolyMC/instances

   • Windows: %APPDATA%/PolyMC/instances

   • macOS: ~/Library/Application Support/PolyMC/instances

   • Linux: ~/.local/share/PolyMC/instances

3. Select all the files and folders in the instances folder, right click on one of them and select Copy

4. Open Prism Launcher, click Folders, then View Instance Folder

5. Once your instance folder has opened, right click anywhere and select Paste

6. Close Prism Launcher and reopen it, your instances should be there

7. Sign in to your accounts, configure Prism Launcher to your preferences

TLauncher

Not to be confused with ATLauncher.

TLauncher is malware, so it will never be supported by Easy Multiplayer. It is highly recommended to reset your entire computer, then come back to this page and follow install instructions for any supported launcher.

Cracked launchers

Any launchers that let you run the game without having purchased it first are not supported.

Other launchers

Technically you can install it in some other launchers that support Modrinth modpacks or in any launcher by following the vanilla instructions. However, please do not ask for support here if you use an unsupported launcher.

Other modpacks

While it is theoretically possible, this is not advised:

• mods may have conflicts

• neither Easy Multiplayer or the other modpack will be able to support you

Instead, we recommend you to use modpack with other mods added by you.

Game clients

Easy Multiplayer is not compatible with any "game clients", including "hacked clients" and "PvP clients". Use normal mods instead!

Bedrock Edition

Easy Multiplayer is not compatible with Bedrock Edition. See also: Pojav Launcher

Servers

Any server that works with vanilla Minecraft is supported, no changes are necessay to the server.

Quilt/Fabric

Easy Multiplayer is based on Quilt, not Fabric.

It can be attempted to run it through Fabric, but not all mods and configurations work without changes. If you do attempt it, you're on your own - do not ask for support from the modpack.