ModsFinder

Jack In The Box

by Hero_N8

A chest that opens into a towering jester is the core prank in Jack In The Box, a Fabric mod for Minecraft 1.21.8.

FabricClient and serverAll rights reserved1.21.8

What it does

Jack In The Box is a prank mod made for Modfest. A chest that looks ordinary turns into a giant jack-in-the-box jester when a player opens it, so anyone who searches storage in a shared world may get a surprise. The mod is a Social entry with Cursed, Decoration and Utility tags, and it needs Fabric API and Geckolib to run. It is client and server, so the server and every player need it, and it is released under All rights reserved, which means it is not open source, although its source code is public.

Key features

  1. Disguised chest

    The chest looks like a regular chest until it is opened, so it blends into a base or a storage room.

  2. Giant jester jump-scare

    Opening the chest makes a giant jack-in-the-box jester spring out, built on the Geckolib animation library.

  3. Mod sharing for pranks

    Friends on a server can set the trap in each other's storage, turning chest searches into a running joke.

Compatibility

Latest build for each game version and loader.

1.21.81.1
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 2

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required
GeckolibA 3D animation library for entities, blocks, items, armor, and more!
Required

How it compares

Full comparison

Toy Bricks is an open source Fabric option for 1.21.1 – 1.21.8 under the MIT License, running on client and server. Chiseled is another open source Fabric mod under the MIT License, covering 1.21.8 – 26.3 on client and server. Zip To It! is open source as well, under the MIT License, but only for 1.21.8.

ModLoadersGame versionsEnvironmentUpdated
Jack In The BoxFabric1.21.8Client and server2025-08-17
Toy BricksFabric1.21.1 – 1.21.8Client and server2026-04-17
ChiseledFabric1.21.8 – 26.3Client and server2026-09-16
Zip To It!Fabric1.21.8Client and server2025-09-02

Questions

Does Jack In The Box need Geckolib?

Yes. Geckolib is required alongside Fabric API, and both must be installed for the jester to animate.

In the catalog

Jack In The Box is one of 5,392 Social mods on ModsFinder, and one of 4,084 Social mods for Fabric. 17,695 mods support Minecraft 1.21.8.

Social mods5,392Fabric modsMods for 1.21.817,695

Similar mods

Simple Voice Chat1.8.8 – 26.3No Chat Reports1.19 – 26.3Chat Heads1.16 – 26.3Essential Mod1.8.9 – 26.3More Chat History1.16.5 – 26.3e4mc1.17 – 26.3

What the author says

You walk home after a long day in the mines, you go to stash your spoils of labour when you think you hear a quiet snickering from a distance. after stopping to listen, you hear no more noise, so you shrug it off and go to open your chest when... BOO! A GIANT Jack-In-The-Box jumps out at you!
Hero_N8, on the Modrinth page

Official listing

Owner
Hero_N8
Published
2025-08-17
Updated on Modrinth
2025-08-17
Facts verified
2026-10-15

Tags

CursedDecorationSocialUtility
Open on ModrinthCompare