StackOne Mod (1.20.4, 1.20.1) – Minecraft Inventory Overhaul for Hardcore Play

Inventory management is a core part of Minecraft, but what happens when you’re only allowed to carry one item per slot no exceptions? StackOne Mod (1.20.4, 1.20.1) challenges your instincts by limiting every item in the game to a single count per inventory slot. Designed for Fabric and Forge, this mod forces players to rethink crafting, resource gathering, and even how they traverse the world. It’s a brutal shift from traditional gameplay and is ideal for hardcore survival, puzzle maps, or challenge modpacks that demand extreme efficiency and planning.

Features:

Reduces all item stack sizes to 1, including blocks, tools, and consumables.
Turns your inventory into a highly limited resource, amplifying difficulty.
Perfect for challenge modpacks, realistic survival maps, and inventory-based puzzles.
Includes a configuration system for flexibility:
– ignore_item.json allows whitelisting of specific items to behave normally.
– Example config entry: { "item": "minecraft:stone" }
Compatible with both Fabric and Forge mod loaders.
Offers a fresh gameplay twist for experienced players or content creators.

Screenshots:

Crafting Recipes:

We recommend installing Just Enough Items (for Forge-based mods) or Roughly Enough Items (for mods using the Fabric modloader) to view all available recipes in this mod.

Requires:

Minecraft Forge or Fabric API

How to install:

How To Download & Install Mods with Minecraft Forge

How To Download & Install Fabric Mods

How To Download & Install The Quilt Loader

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Why use StackOne Mod?

This mod is not for the faint of heart it’s for those who want to test their resourcefulness in Minecraft at a whole new level. By limiting all stacks to just one item, you’re forced to prioritize, plan, and adapt in ways you never needed to before. Whether you’re creating a hardcore modpack or designing a custom map with unique mechanics, StackOne adds a bold layer of strategic depth to your gameplay.

FAQs

Does this apply to every item in the game?

Yes, by default every item—vanilla or modded—will only stack to one per slot.

Can I allow certain items to stack normally?

Yes. You can use the `ignore_item.json` config file to whitelist specific items that can bypass the one-per-slot rule.

Will this affect chests and containers?

Yes. All inventories, including player inventory, chests, barrels, and shulker boxes, are affected unless otherwise configured.

Is this mod good for regular survival gameplay?

It’s better suited for hardcore, challenge, or puzzle gameplay. It’s intentionally restrictive and may frustrate players expecting standard Minecraft convenience.

Does it support both Fabric and Forge?

Yes, the mod is available for both Fabric and Forge versions of Minecraft.