MCA Selector is a free tool for selecting and changing chunks and regions in Minecraft Java Edition world saves. It works with Anvil .mca region files and supports versions 1.2.1 through 1.21.11 and 26.1 through 26.3+. Filters can select, export or delete chunks and regions using conditions such as data version, last update time and inhabited time; conditions can be combined or expressed in one-line Groovy scripts. Its chunk editor exposes NBT structures, including poi and entity data, for changing, adding, removing or moving tags. Chunks can be imported from another world with offsets, overwrite options, selection-only import, Y offsets and section ranges. Selections can be copied and pasted through the system clipboard, while configurable color-gradient overlays display per-chunk values. A command-line mode supports operations including selection creation, import and export, deletion, region defragmentation, NBT changes and image generation. Downloads include Windows, macOS and Linux builds and a universal JAR. The project warns that snapshot-generated worlds may not work even when their version appears in its support table, and recommends backing up because the tool can modify or delete chunks.
Who it is for
It suits Minecraft Java Edition users who need to inspect, filter, import or edit chunks in world saves. It also offers command-line operations for users who prefer them.
What is good
- Filters can combine multiple chunk conditions.
- NBT editor includes entity and poi data.
- Supports chunk import with offsets and overwrite options.
- Offers both GUI and command-line operations.
- Windows, macOS, Linux and universal JAR builds are listed.
What to know first
- Can modify or delete world chunks; backups are recommended.
- Snapshot-generated worlds are not guaranteed to work.
- Terrain editing is not supported.
Verdict
MCA Selector offers detailed region and chunk operations across a wide listed version range. Its ability to alter or delete world data makes a backup prudent, and snapshot compatibility is not guaranteed.
MCA Selector plans and pricing
All plansCompared on Minecraft world editors
- Free plan
- Yes
- Minecraft editions
- java
- Supported platforms
- Windows, macOS, Linux
- Region editing
- Yes
- Terrain editing
- No
- Entity editing
- Yes
- Batch operations
- Yes
- Supported world formats
- Anvil .mca region files
