DatapacksJava
Fat Stacks
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
Most items can be stacked up to 99, including many items that could previously only stacked to 16 or just 1.
The maximum stack size of items are updated when they enter the inventory, are found in a storage block, are on the ground, sold from a villagers, crafted, and more
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.4, 1.21.5, 1.21.6
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
Verified by MCModsHub
- Downloads as Fat Stacks.zip
- Download size: 495 KB
- Download link checked 29 Aug 2026 — working
These come from our own check of the pack file, not from the source page.