1 Slot Survival

1 Slot Survival

What if you had to survive Minecraft with a single inventory slot?

This mod blocks every inventory slot except the first one of your hotbar. Every choice matters: which item do you keep, when do you swap it, what do you leave behind?

How it works

• The other 35 slots (8 hotbar slots + 27 main inventory slots) are filled with barriers named "SLOT BLOQUÉ".
• If you put an item into a blocked slot, it is ejected onto the ground. It is never deleted or duplicated.
• The barriers can't be placed or dropped, and they vanish when you die, so they never end up on the ground.
• If you hold a barrier in your hand, a reminder appears in the action bar.
• Optionally, the offhand can be blocked too.
• Armor slots are left untouched.

Server-side only

The mod runs entirely on the server: on a multiplayer server, your friends don't need to install anything and can join with a vanilla client. It also works in singleplayer.

Commands

Operator permission (level 2) is required.

Command · Effect
/slotlock enable · Enables the challenge
/slotlock pause · Pauses the challenge
/slotlock offhand on / off · Blocks or frees the offhand slot
/slotlock status · Shows the current state and how many barriers are in your inventory
/slotlock uninstall · Removes every barrier before you delete the mod

Exempt a player: /tag add sl_exempt

Settings are saved in config/slot_survival.properties.

Installation

1. Install Fabric Loader (0.16.0 or newer) for Minecraft 1.21.1.
2. Install Fabric API.
3. Put the mod file in your mods folder.

Uninstalling

Run /slotlock uninstall to remove all barriers from inventories, then delete the mod. If you skip this step, the barriers stay in your inventories.

Challenge ideas

• A speedrun with a single slot.
• A survival run with friends, one slot each.
• An Ender Dragon challenge: which single item will you fight it with?