Slime Bounce
by Farkas
Slime Bounce lets slime entities bounce the way slime blocks do, so a player who lands on one is launched back into the air rather than stopping.
What it does
Bounce behavior is applied to slime entities, which then rebound from the ground in the same manner as slime blocks. A slime that is struck or dropped onto is sent upward, and the height of each rebound depends on how fast the entity was falling. Slimes that keep bouncing with enough velocity are squashed, a reaction that matches the death behavior of slimes in vanilla.
Every part of the behavior is configurable per world, so a server owner can change how strongly slimes bounce or where the mechanic applies without editing the mod's files. The configuration is read for each world, which lets different worlds on one installation play differently.
Slime Bounce is open source under the MIT License. It needs to be installed on the client and on the server, and it is published for Fabric, Forge and NeoForge, with builds covering 1.20.1 – 1.21.11. The latest file for each loader is 1.0.0 for 1.21.11, released on 2026-03-17.
Key features
Bouncing slime entities
Slime entities rebound off the ground like slime blocks, letting players use them as a launch surface.
Squash on repeated bounces
A slime that bounces several times at high enough velocity is squashed, matching the death behavior of slimes in vanilla.
Per-world configuration
Bounce strength and related settings are adjustable for each world, so worlds on the same installation can differ.
Velocity-based rebound
The height of each bounce depends on the speed at which the entity lands, so harder drops send the player higher.
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
1.20.x6 of 6 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Slime Jump is a client and server mod with files for 1.20.1 – 1.21.1 across the same three loaders, under All rights reserved. BoingBoingItems is server-side only, open source under the MIT License, and covers 1.20 – 1.21.2, so players can join without installing it. Tinkers Bounce Pad is also client and server, published for 1.19 – 1.21.3 and under All rights reserved, and it works through a placed block rather than slime entities.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Slime Bounce | Fabric, Forge and NeoForge | 1.20.1 – 1.21.11 | Client and server | 2026-03-17 |
| Slime Jump | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2025-05-22 |
| BoingBoingItems | Fabric, Forge and NeoForge | 1.20 – 1.21.2 | Server-side only | 2025-12-02 |
| Tinkers Bounce Pad | Fabric, Forge and NeoForge | 1.19 – 1.21.3 | Client and server | 2024-11-16 |
Questions
Does Slime Bounce need to be installed on the server?
Which loaders does Slime Bounce support?
Can the bounce behavior be changed for a single world?
In the catalog
Slime Bounce is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from Farkas
Similar mods
Official listing
- Modrinth page
- modrinth.com/mod/slime-bounce
- Owner
- Farkas
- Published
- 2026-03-17
- Updated on Modrinth
- 2026-03-17
- Facts verified
- 2026-10-15