How to install FO
Last updated
Last updated
Here are the instructions to install Fabulously Optimized to various launchers.
Can't use Minecraft 1.17 and higher due to hardware limits? and then retry.
Select Minecraft from the grid or sidebar
Search "Fabulously Optimized"
Click Install
Optional: Select the version you want by instead clicking the row → Versions → ⤓.
To run the modpack, hover on the modpack icon and click Play
Once the Minecraft Launcher has opened, click Play again
Or directly from the website:
Go to on CurseForge
Click Install and accept the prompt in your browser
Optional: Select the version you want by instead clicking Files → the version you want → Install.
The app should open and download should start
To run the modpack, hover on the modpack icon and click Play
Once the Minecraft Launcher has opened, click Play again
App version 0.6.2 or higher required, these instructions are for 0.9.2+.
Under "Discover a modpack" section, click on "Fabulously Optimized"
Click ⤓ Install
Optional: Select the version you want by instead clicking the tile → Versions → ⤓ on the version you want.
The modpack will now install.
Once installed, go to |||\ "Library" and hover on the created instance
Click ▶️ button to play.
Click Add Instance
Select Modrinth tab from the left
Select "Fabulously Optimized"
Click OK
Optional: Select the version you want by selecting it on the dropdown before you click OK.
The modpack will now install.
Once installed, double-click the icon to play.
With Steam Deck turned on, hold down ⏻ (power) and tap Switch to Desktop.
From the taskbar, select 👜 "Discover".
Tap the searchbar on the top left corner, then press ❎ to open the on-screen keyboard.
Search for "Prism Launcher" and tap Install on the first result.
Launch it and go through its initial setup process, then close it.
Open Steam app, select Games → Add a Non-Steam Game to My Library... → select Prism Launcher → ADD SELECTED PROGRAMS.
Close Steam and launch Return to Gaming Mode.
Launch Prism Launcher from your game library.
Tap Add Instance
Select Modrinth tab from the left
Select "Fabulously Optimized"
Click OK
Optional: Select the version you want by selecting it on the dropdown before you click OK.
The modpack will now install.
Once installed, double-tap the icon and wait.
Tap Options... → Controls... → Controller Settings...
Select a controller, then Done → Done → Done
The game is now set up and you can just launch it from your game library from now on.
Click Add Instance
Select Modrinth tab from the left
Select "Fabulously Optimized"
Click OK
Optional: Select the version you want by selecting it on the dropdown before you click OK.
The modpack will now install.
Once installed, double-click the icon to play.
Download the pack for your preferred Minecraft version:
Drag the ZIP-archive to MultiMC window, and hit OK in the window that pops up.
Double-click that version you just created to download and launch the modpack
Windows: Open the .exe file, click More info and then Run anyway.
macOS: See instructions below
Linux: Open the .appimage file and click Run once when prompted.
Select preferred FO/Minecraft version and install
Run Minecraft Launcher. You'll see the new installation, click PLAY.
Due to technical limits and issues, GDLauncher Legacy is no longer supported and GDLauncher Carbon not yet supported. It is recommended to use Prism Launcher instead:
Click Add Instance
Select Modrinth tab from the left
Select "Fabulously Optimized"
Click OK
The modpack will now install.
Once installed, click the Folder button on the left.
Open GDLauncher
Right click on your previously used instance → Open Folder
Copy the important files and folders over:
saves - your local worlds
shaders - if you use any
screenshots - screenshots you've taken with F2 or F9
servers.dat - your multiplayer servers
options.txt - if you want to keep your vanilla option and all hotkey changes
Launch the instance on Prism and confirm everything is correct
Uninstall GDLauncher
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.
Pojav Launcher is not supported because it allows piracy and does not support Sodium, among some other issues.
To migrate to Prism Launcher (a safe fork of PolyMC), follow these instructions:
Uninstall PolyMC
Launch it and pay attention to the prompt you get:
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.
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.
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.
To run the modpack, double click the Fabulously Optimized icon
Any launchers that let you run the game without having purchased it first are not supported.
Technically you can install it in some other launchers that support CurseForge or 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.
Some users have experienced interest in using FO with other, content-focused modpacks.
While it is theoretically possible, this is not advised:
mods may have conflicts
neither FO or the other modpack will be able to support you
Fabulously Optimized is not compatible with any "game clients", including "hacked clients" and "PvP clients".
Considered a "client" due to the amount of different things it does, which can also have incompatibilities.
Note: these lists are managed by contributors outside this wiki. There can be mods that are already in this modpack or are incompatible with it.
It can be attempted to run it through Quilt, 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.
Bonus: if you want a better icon in your game library, .
P.S. If you get Deck-specific issues, try asking on as FO moderators may not have one.
You need to play the game.
You need to play the game.
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Other versions can be found from
Download and run it
For macOS or Linux to run the Fabric Installer.
Download and install version 0.16.12
, then click the ⬇️ button
Open the zip file and copy all folders to your .minecraft folder
Recommended: delete options.txt to get
Download and install
Minecraft 1.19-1.19.3: Fabric Loader 0.14.24 and
Minecraft 1.17-1.18.2: Fabric Loader 0.14.12 and
Minecraft 1.16.5: Fabric Loader 0.13.3 and
Go to on CurseForge
Open the zip file and copy all folders from zip's minecraft folder to your .minecraft folder
Recommended: delete options.txt to get
resourcepacks - if you added any (it is not needed to copy )
Not to be confused with .
and you should uninstall it immediately!
Install
If needed, or the modpack again
Not to be confused with .
, so it will never be supported by Fabulously Optimized. It is highly recommended to , then come back to this page and follow install instructions for any supported launcher.
There is a legitimate way to obtain Minecraft for cheaper: . After that, pick any supported launcher from this page and enjoy the game!
Instead, we recommend you to use FO with .
If you'd still like to do it on your responsibility, just install the other modpack first and then copy FO's files on top .
Instead, it is suggested to use this modpack and that you might be missing from said clients. Here is a list for:
World hosting
Fabulously Optimized is not compatible with Bedrock Edition . You may be interested in the , however.
Any server that works with vanilla Minecraft is supported, no changes are necessary to the server. See for tips.
Fabulously Optimized is based on , not .
The sustainability and popularity of Quilt is being tracked in .