Home›Bedrock›Addons›Stack Massive Addon (26.x) – Store Up to One Million Items in a Single Slot

AddonsBedrock

Stack Massive Addon (26.x) – Store Up to One Million Items in a Single Slot

Q: How do I install Stack Massive Addon (26.x) – Store Up to One Million Items in a Single Slot?

Download the .mcpack or .mcaddon file. Open it — Minecraft imports it. In your world: Behavior Packs → Available → Activate, then the same under Resource Packs. In MCModsHub, or directly above on this page.

Bedrock add-on listed for Minecraft 1.21 (behavior pack only). File opened and checked on 27 Sep 2026; installs from the MC Bedrock Mods app on Android.

by Moon

⬇ Download

Open in MCModsHub Get it on Google Play →

Stack Massive Addon (26.x) – Store Up to One Million Items in a Single Slot — screenshot 1

Stack Massive Addon (26.x) – Store Up to One Million Items in a Single Slot — screenshot 2

Stack Massive Addon (26.x) – Store Up to One Million Items in a Single Slot — screenshot 3

Stack Massive Addon (26.x) – Store Up to One Million Items in a Single Slot — screenshot 4

Stack Massive Addon (26.x) – Store Up to One Million Items in a Single Slot — screenshot 5

Stack Massive Addon (26.x) – Store Up to One Million Items in a Single Slot — screenshot 6

Stack Massive Addon (26.x) – Store Up to One Million Items in a Single Slot — screenshot 7

Stack Massive Addon (26.x) – Store Up to One Million Items in a Single Slot — screenshot 8

Stack Massive Addon allows you to store up to one million identical items in a single inventory slot. It automatically compacts compatible blocks, potions, boats, and other items into clean stacks. The addon also refills your active item stack whenever you place, use, or drop items in your world.

Features:

Store up to one million units of compatible items per slot.
Automatically refills your active stack when placing or using items.
Stacks totems, beds, boats, buckets, and minecarts together.
Keeps different potion types and colored beds properly separated.
Protects tools, armor, and enchanted gear from merging.

Screenshots:

Stack Massive Addon Screenshot 1 — Player inventory holding massive quantities of identical items in single slots

Stack Massive Addon Screenshot 2 — Normally unstackable items grouped together into large inventory stacks

Stack Massive Addon Screenshot 3 — Compacted building blocks stored in extreme quantities per slot

Stack Massive Addon Screenshot 4 — Active hotbar slot automatically refilling during continuous block placement

Stack Massive Addon Screenshot 5 — Different potion types remaining organized and separated in storage

Stack Massive Addon Screenshot 6 — Minecarts and water buckets bundled together in a player inventory

Stack Massive Addon Screenshot 7 — Thousands of crafting materials compressed into single item slots

Stack Massive Addon Screenshot 8 — Enchanted weapons and armor protected from combining with other gear

Stack Massive Addon Screenshot 9 — Colored beds stacked neatly while retaining individual color distinctions

Stack Massive Addon Screenshot 10 — Automatic stack replenishment active while building structures in survival

Stack Massive Addon Screenshot 11 — Chest storage holding enormous amounts of resources per container slot

Stack Massive Addon Screenshot 12 — Clean player inventory managing millions of survival resources at once

Stack Massive Addon Download Links

Quick facts

Edition: Minecraft Bedrock
File type: .mcpack or .mcaddon
How to install: Download the .mcpack or .mcaddon file. → Open it — Minecraft imports it. → In your world: Behavior Packs → Available → Activate, then the same under Resource Packs.
Where to get it: In MCModsHub, or directly above on this page.

Install steps are the general flow for this file type — How to install Minecraft Bedrock addons & mods walks through it step by step.

File checked by MCModsHub

Save it as 516666.mcpack before opening — it downloads as .mcaddon, but it is a .mcpack pack
Manifest requires Minecraft 1.21.0 or newer
Complete pack — everything it depends on is inside the file
Download size: 102 KB
Download link checked 27 Sept 2026 — working
Mirrored on our own servers — the download does not depend on the original host

These come from our own check of the pack file, not from the source page.

Explore more

All Addons for Bedrock All Minecraft Bedrock mods