ModsFinder

Build undo

by Joshi203

Build Undo lets a builder reverse an accidental block placement with a key press and bring it back again with a redo key.

FabricClient and serverAll rights reserved1.21.11

What it does

The Fabric mod is meant for players who occasionally set a block down in the wrong place and need a fast, fair correction. Pressing the undo key removes the last placed block, and the redo key restores the last block that was undone. A settings screen opens through a command, so the behavior can be adjusted without editing files. The client and server both need the mod, and it requires Fabric API. Files are published for Fabric 1.21.11 only, at version 1.0.0, released 2026-05-21 under All rights reserved.

Key features

  1. Undo the last placement

    Pressing Y removes the most recently placed block, so a misplaced block can be taken back at once.

  2. Redo the last undo

    Pressing U restores the last block that was undone, for when an undo removed the wrong one.

  3. Settings command

    A command opens the Build Undo settings, where the undo and redo behavior can be changed.

Compatibility

Latest build for each game version and loader.

1.21.111.0.0
ReleaseBetaAlphaNot available

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

How it compares

Full comparison

Ctrl+Z is a Fabric client-side mod for Minecraft 26.3, released under the MIT License as open source. VoxelCleaner is a Fabric mod for 1.21.11 that runs client or server optionally, released as open source under CC0 1.0 Universal.

ModLoadersGame versionsEnvironmentUpdated
Build undoFabric1.21.11Client and server2026-05-21
Ctrl+ZFabric26.3Client-side only2026-10-14
VoxelCleanerFabric1.21.11Client or server, optional2025-12-28

Questions

Does Build Undo need Fabric API?

Yes. Fabric API is required, next to Fabric Loader, and the mod is published for Fabric only.

Does the server need Build Undo?

Yes. The server and every player need the mod installed.

In the catalog

Build undo is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 19,862 mods support Minecraft 1.21.11.

Game mechanics mods29,952Fabric modsMods for 1.21.1119,862

More from Joshi203

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Similar mods

Sounds1.20 – 26.3Cut Through1.18.2 – 26.3Carpet1.14.4 – 26.3Client Tweaks1.12.2 – 26.3Double Doors1.16.5 – 26.3Sit1.7.10 – 26.3

What the author says

Build Undo is a lightweight quality-of-life Fabric mod for builders who sometimes place a block in the wrong spot and want a quick, fair way to fix it. Z: Undo last placed block Y: Redo last undone block U: Open Build Undo settings Commands
Joshi203, on the Modrinth page

Official listing

Owner
Joshi203
Published
2026-05-21
Updated on Modrinth
2026-05-21
Facts verified
2026-10-15

Tags

Game mechanicsUtility
Open on ModrinthCompare