Slots Unofficial
Slots Unofficial, a Forge storage mod for 1.20.1, lets players earn extra inventory slots by gaining experience levels.
What it does
The mod is a fork of the Slots mod made outside the original project. Each inventory slot starts closed, with one slot open by default. Slots open as the player gains experience levels, so a higher level adds another usable slot in the inventory. Players can open the inventory with the Y key by default.
The original game caps the player inventory at 27 slots, and this fork raises that cap to 54 slots. Its default pace is one new slot every three levels, and the settings can be changed. The mod also offers a command for opening slots directly.
Installation needs Forge for Minecraft 1.20.1 only. The server and every player need the mod installed. It is open source under the MIT License, which the fork complies with, and files were published from 2026-06-30 with the latest, 1.6.0, dated 2026-07-15.
Key features
Experience-based slot access
Inventory slots open as the player gains experience levels, with new slots added at a steady pace.
Expanded inventory
The inventory grows from the original 27 slots to a maximum of 54 slots.
Adjustable pace settings
The default pace and related options can be changed in the mod's settings.
Manual slot command
A command lets players open slots directly without waiting for experience levels.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Long survival runs
A player who wants more storage can grow the inventory over time as experience accumulates.
Server progression
Server owners can tie inventory growth to experience levels and adjust the pace through settings.
Who it’s for: The mod suits players on Forge 1.20.1 who want a larger inventory tied to progression, and server owners who want that progression to be adjustable.
How it compares
InvConfig is open source under the MIT License and runs client and server on Forge 1.20.1, but it is a configuration tool rather than a slot system. SlotZero is a Forge 1.20.1 client and server mod released under All rights reserved, so its code is not open source. Grave Drop covers 1.12.2 – 1.20.6 on Forge under the MIT License and is client and server. DM (legacy): All dimensions is limited to 1.12.2 on Forge and is open source under the GNU General Public License v3.0 only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Slots Unofficial | Forge | 1.20.1 | Client and server | 2026-07-15 |
| InvConfig | Forge | 1.20.1 | Client and server | 2026-05-04 |
| SlotZero | Forge | 1.20.1 | Client and server | 2026-06-13 |
| Grave Drop | Forge | 1.12.2 – 1.20.6 | Client and server | 2026-01-18 |
| DM (legacy): All dimensions | Forge | 1.12.2 | Client and server | 2025-06-10 |
Questions
Does Slots Unofficial need to be installed on the server?
Which Minecraft version does Slots Unofficial support?
How does the mod relate to the original Slots mod?
In the catalog
Slots Unofficial is one of 4,058 Storage mods on ModsFinder, and one of 1,886 Storage mods for Forge. 34,764 mods support Minecraft 1.20.1.
Similar mods
What the author says
This is an unofficial fork of the Slots mod. It complies with the original MIT License.
Official listing
- Modrinth page
- modrinth.com/mod/slots-unofficial
- Owner
- takapii_kun0717
- Published
- 2026-06-30
- Updated on Modrinth
- 2026-07-15
- Facts verified
- 2026-10-15