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MCA Selector

github.com

Free plan WindowsmacOSLinux
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Spec score 7.9 #10 of 35 in Minecraft World Editors

What it is

MCA Selector is a free tool for selecting and modifying chunks and regions in Minecraft Java Edition world saves. It can export, delete, or edit selected areas using filters such as data version, last update time, and inhabited time; multiple conditions can be chained. Custom one-line Groovy scripts and a Script Editor extend filtering. The chunk editor exposes the full NBT structure, including points of interest and entity data, allowing tags to be changed, added, deleted, or moved. Users can import chunks from another world with offsets and overwrite options, and copy or paste selections through the system clipboard.

Customizable color-gradient overlays show per-chunk values. A command-line mode handles operations including selection creation, chunk import and export, deletion, region defragmentation, NBT changes, and image generation. Downloads include Windows, macOS, and Linux builds, plus a universal JAR. MCA Selector supports Anvil .mca region files. The project warns that snapshot-generated worlds may not work even when a version appears in its support table, and recommends backing up worlds because the tool can modify or delete chunks.

Spec sheet

Purpose
MCA Selector exports, deletes or edits selected chunks and regions in Minecraft Java Edition world saves.Read 30 Sep 2026 · github.com
Support
The maintainer profile links to a Discord server.Read 30 Sep 2026 · github.com
License
The software is released under the MIT License, permitting use, copying, modification, publication, distribution, sublicensing and sale subject to the license conditions.Read 30 Sep 2026 · github.com
Chunk filtering
Filters can select, export or delete chunks and regions using conditions such as data version, last update time and inhabited time, with multiple conditions chained together.Read 30 Sep 2026 · github.com
Chunk import
Chunks can be imported from another world with offsets, overwrite options, selection-only import, Y offsets and section ranges.Read 30 Sep 2026 · github.com
CLI operations
CLI modes include selection creation, chunk export, chunk import, region defragmentation, chunk deletion, NBT changes, cache image generation and image generation.Read 30 Sep 2026 · github.com
Command line
Using any command-line parameter switches MCA Selector to CLI mode without starting the GUI.Read 30 Sep 2026 · github.com
Copy and paste
Selections can be copied to the system clipboard and pasted into the same or a different world.Read 30 Sep 2026 · github.com
Custom scripts
The filter tool supports custom one-line Groovy scripts and a Script Editor.Read 30 Sep 2026 · github.com
Downloads
The repository provides Windows Installer, macOS arm64 and x64, Debian arm64 and x64, RPM arm64 and x64, and universal JAR downloads.Read 30 Sep 2026 · github.com
NBT editing
The chunk editor allows editing the entire NBT structure, including poi and entities data, with tags that can be changed, added, deleted or moved.Read 30 Sep 2026 · github.com
Notable limitation
The project states that snapshot-generated worlds are not guaranteed to work even when a version appears in the supported-version table.Read 30 Sep 2026 · github.com
Overlays
Customizable overlays display per-chunk values as color gradients with configurable minimum and maximum values.Read 30 Sep 2026 · github.com
Safety warning
The project warns that MCA Selector modifies and deletes Minecraft world chunks and recommends making backups before use.Read 30 Sep 2026 · github.com
Supported versions
The project lists support from Minecraft 1.2.1 through 1.21.11 and versions 26.1 through 26.3+.Read 30 Sep 2026 · github.com

Plans and prices

MCA Selector Free MIT License · downloadable Windows, macOS, Linux and universal JAR builds Read 30 Sep 2026 · github.com

Every MCA Selector plan and price →

Strong points and limits

Strong points

  • Filters can chain multiple conditions
  • NBT editor includes points of interest and entity data
  • Command-line mode supports import, export, and deletion
  • Windows, macOS, and Linux downloads are available

Limits

  • Snapshot-generated worlds are not guaranteed to work
  • The project recommends backups before modifying worlds
  • Supports Anvil .mca region files

Who it suits

MCA Selector suits Minecraft Java Edition players who need to inspect, select, export, import, or edit world chunks and regions. Its filters, NBT editor, and command-line mode may suit users comfortable with detailed world-file operations.

Verdict

MCA Selector offers both graphical and command-line tools for detailed chunk and region changes. Back up a world first, and note that snapshot-generated worlds are not guaranteed to work.

Where Specifiction places it

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