Jenga Mod

Real physics Jenga for Minecraft. A recreation of the systemzee video where the tower actually leans, wobbles, and comes crashing down — built on the Sable physics engine, so every piece is its own physics object that falls, tips, and collides on its own.

How it plays

Run /stack to drop a full tower in front of you, then play it for real — grab a piece with an empty hand, ease it out, and try not to be the one who brings the whole thing down. Each piece is a 1×3×9 block of stripped logs, and the layers alternate direction exactly like the real game.

Commands

Command	What it does
/stack <N>	Build an N-layer tower (1–999), one layer per tick
/stack cancel	Stop a build that's in progress
/stack status	Check whether a build is running for you
/gamerule jengaMaxLayers <N>	Cap tower height for the world (default 999)
/jenga start, /jenga turn next, /jenga turn last	Turn-based play — heavily in beta

Controls

Action	Result
Right-click a piece (empty hand)	Grab it
Scroll while holding	Rotate the piece 90°
Ctrl + scroll (rebindable) while holding	Move the piece closer or further from you
Right-click again	Let go and let physics take over

Config

Open the Jenga button in the options menu to choose which blocks the tower is built from. (Turn enforcement is still very early beta, so it may not be finished yet.)

Before you download — please read

[!IMPORTANT]

• Requires Fabric Loader, Fabric API, and Sable for Minecraft 1.21.1.
• Sable is the physics engine that makes the pieces move — the mod will not work without it.
• In multiplayer, install it on both the client and the server, on the same version.

Known limitations

Honest trade-offs, not bugs:

• The /jenga turn-based commands (start, turn enforcement) are heavily in beta and may not behave correctly yet.
• Big towers take a moment to build — one layer per tick, so /stack 999 is intentionally slow.

How does it work under the hood? (optional reading)

Each Jenga piece is a 1×3×9 group of stripped logs assembled into its own Sable sub-level, so it falls, tips, and collides independently of every other piece. Grabbing a piece follows your view and your scroll rotation, dispatching Sable teleports to whichever sub-level you're looking at.

Compatibility

Minecraft	1.21.1
Loader	Fabric
Dependencies	Fabric API, Sable
Java	21+

Found a bug or have an idea? Open an issue on GitHub with what you did and what happened — it really helps.