Flatsonar

MCA Selector

by Querz

Manage Minecraft chunks

Broad permissions Flathub reviewed MIT v2.8
Install Source code
Screenshot 1 of MCA Selector Screenshot 2 of MCA Selector Screenshot 3 of MCA Selector Screenshot 4 of MCA Selector Screenshot 5 of MCA Selector Screenshot 6 of MCA Selector Screenshot 7 of MCA Selector Screenshot 8 of MCA Selector

About

MCA Selector is an external tool for Minecraft Java Edition that lets you visualize, select, export, or delete world chunks and region files.

Common uses: trim large worlds, remove corrupted chunks, and export/import regions.

Key features:

  • Top-down map view — visual overview of regions and chunks for quick navigation and selection.
  • Customizable overlays — display per-chunk values as color gradients with configurable min/max to visualize world data.
  • Dimension switching — open/edit Overworld, Nether, and End (DIM-1/DIM1) region folders.
  • Select/edit chunks individually or in groups
  • Powerful chained filters — select chunks/regions by data version, last updated time, player inhabited time, coordinates, modification date and more (even scripting custom filters); multiple conditions can be combined for precise queries.
  • Chunk Editor — view and edit the full NBT structure of a chunk, including POI and entity data; supports rename, add, delete, and drag‑and‑drop moves.
  • Easy chunk import/export — copy chunks from one world to another.
  • NBT Changer — modify specific NBT values directly in world files.
  • Chunk regeneration (delete to let Minecraft regenerate with new terrain)

Note that you should always back up your world before editing it with MCA Selector.

Permissions

1 permission weaken the sandbox. Flatsonar asks before installing.

  • X11 display: X11 lets apps read input and windows of other apps
    --socket=x11
  • inter-process communication (needed for X11)
    --share=ipc
  • GPU acceleration
    --device=dri
  • access to ~/.var/app/ch.tlaun.TL/data/game/.minecraft
    --filesystem=~/.var/app/ch.tlaun.TL/data/game/.minecraft
  • access to ~/.minecraft/saves
    --filesystem=~/.minecraft/saves
  • access to ~/.var/app/org.prismlauncher.PrismLauncher/data/PrismLauncher/instances
    --filesystem=~/.var/app/org.prismlauncher.PrismLauncher/data/PrismLauncher/instances
  • access to ~/.local/share/PolyMC/instances
    --filesystem=~/.local/share/PolyMC/instances
  • access to ~/.var/app/org.polymc.PolyMC/data/PolyMC/instances
    --filesystem=~/.var/app/org.polymc.PolyMC/data/PolyMC/instances
  • access to ~/.var/app/com.lunarclient.LunarClient/.minecraft/saves
    --filesystem=~/.var/app/com.lunarclient.LunarClient/.minecraft/saves
  • access to ~/.var/app/ch.tlaun.TL/data/game/versions
    --filesystem=~/.var/app/ch.tlaun.TL/data/game/versions
  • access to ~/.var/app/com.atlauncher.ATLauncher/data/instances
    --filesystem=~/.var/app/com.atlauncher.ATLauncher/data/instances
  • access to ~/.local/share/PrismLauncher/instances
    --filesystem=~/.local/share/PrismLauncher/instances
  • access to ~/.var/app/com.mojang.Minecraft/.minecraft/saves
    --filesystem=~/.var/app/com.mojang.Minecraft/.minecraft/saves

Who publishes this

On Flathub: the manifest was reviewed and built on Flathub's infrastructure, but the developer has not verified ownership of the app id.

  • installs a prebuilt binary instead of building from source (x2)
    source:prebuilt
  • on Flathub: manifest reviewed and built by Flathub; the developer has not verified the app id
    publisher:flathub

Maintenance

Recent activity on the upstream repository, or built and reviewed by Flathub.

No staleness signals: recent activity, or built and reviewed by Flathub.