Useful Slime
With Useful Slime, slime armor and handheld items gain abilities such as sling launches and boot bounces, and the set is available on Fabric, Forge and NeoForge.
What it does
Slime items in the mod carry abilities that change how a player moves and fights. The slime sling and slime boots take their original idea from an earlier design, and the mod extends that concept into a wider set of slime armor and items.
Useful Slime is a transportation and equipment mod for survival and adventure play, and it runs on client and server, so the server and every player need it. Fabric API, Common Network and Fzzy Config are required, and files cover game versions 1.12.2 – 1.21.1 across Fabric, Forge and NeoForge, under a custom license that is not open source.
Snapshot builds are not published. The latest Fabric and NeoForge files are 1.12.1 for 1.21.1, released on 2025-03-09, and the latest Forge file is 1.10.0 for 1.21, released on 2024-07-10.
Key features
Slime armor set
Slime armor pieces are added as wearable equipment with abilities tied to each piece.
Slime sling
The slime sling is a handheld item that launches the player, adapted from an earlier design.
Bouncing boots
Wearable boots make the player bounce, following the same earlier design as the sling.
Performance option
A fastCollisions config exists for players running the Performant mod, which can be turned off to resolve conflicts.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x2 of 2 versions with builds
1.20.x4 of 4 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
1.17.x1 of 1 version with builds
1.16.x4 of 4 versions with builds
1.15.x1 of 1 version with builds
1.12.x1 of 1 version with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Use cases
Adventure travel
Players crossing wide terrain can use slime items to cover distance faster than walking.
Modded survival builds
Players on Fabric, Forge or NeoForge who want slime-themed equipment in a transportation focus can add the set.
Who it’s for: Players who want slime-based movement items and equipment in survival or adventure worlds. Server owners need the mod installed on the server as well as on each client.
How it compares
Slime Boots & Sling is a server-side mod published under the MIT License for 26.2 – 26.3, and it works on Fabric, Forge, NeoForge and Quilt. Slime Boots is also server-side, covers 1.21.6 – 26.2 under All rights reserved, and is not open source. Slime Jump runs on both client and server for 1.20.1 – 1.21.1, under All rights reserved and not open source, so it needs the same install on both sides.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Useful Slime | Fabric, Forge and NeoForge | 1.12.2 – 1.21.1 | Client and server | 2025-03-09 |
| Slime Boots & Sling | Fabric, Forge, NeoForge and Quilt | 26.2 – 26.3 | Server required, client optional | 2026-07-26 |
| Slime Boots | Fabric, Forge, NeoForge and Quilt | 1.21.6 – 26.2 | Server required, client optional | 2026-07-08 |
| Slime Jump | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2025-05-22 |
Questions
Does Useful Slime need Fabric API?
Does the server need Useful Slime?
What should be done if Performant causes problems?
In the catalog
Useful Slime is one of 3,932 Transportation mods on ModsFinder, and one of 2,390 Transportation mods for Fabric. 32,366 mods support Minecraft 1.21.1.
More from MincraftEinstein
Similar mods
What the author says
Credits: Tinkers' Construct for the original slime sling and slime boots ✅ Use this mod as a reference to understand and or create something of your own, as long as it is not a copy or recreation
Official listing
- Modrinth page
- modrinth.com/mod/useful-slime
- Owner
- MincraftEinstein
- Published
- 2022-06-29
- Updated on Modrinth
- 2025-03-09
- Facts verified
- 2026-10-15