The “Portable” moniker is key:

While the official Minecraft launcher can be modified via command-line arguments to change the directory, using an open-source, portable-friendly launcher like or MultiMC makes the process seamless. Download the portable zip version of your chosen launcher.

SkyblockAddition is designed to work like an addon. You place it on top of your favorite primary resource pack. It uses Custom Item Textures (CITs) to override specific items, leaving the rest of your game's look unchanged. The result is a pack that provides a huge quality-of-life boost—making your Hyperion, Necron's Armor, or unique farming tools immediately recognizable in a cluttered inventory—without the performance overhead of a massive pack. The developers have specifically designed it to be a "compromise between performance and comfort". Like most advanced packs, it requires OptiFine for 1.8.9 to enable its CIT features.

Usability & UX

Find and turn it ON (this enables the custom portable menu background layouts). Step 3: Download and Move the Pack

If your computer struggles with lag spikes when opening your portable backpack or menu, switch from a 32x pack version to a 16x version.

Open Minecraft, go to , and ensure Custom Items and Custom Textures are turned ON .

Navigate to your portable drive folder: PortableMinecraft\Launcher\instances\[YourInstanceName]\.minecraft\resourcepacks .