World intelligence
Region-file reading, surface rendering, chunk filters, overlays, exports, deletion, and version-aware data handling.
World Repair Studio · 1.0.0Minecraft world editor · Independent MCA Selector fork
Move worlds
forward.
Inspect terrain, isolate damaged or unwanted chunks, move builds between saves, and prepare old regions to regenerate—inside a workspace designed around the job you are trying to finish.
- Base MCA Selector 2.8
- Stack Java 21 + JavaFX
- License MIT
Isometric 3DNothing changes until you confirm
01Foundation
Credit where it belongs
MCA Selector made the hard part possible.
MCA Selector by Querz is the mature open-source foundation beneath World Repair Studio. It knows how to read Minecraft region files, render worlds, filter chunk data, export selections, and perform the edits that make region-level repair possible.
World Repair Studio does not hide that lineage. It keeps MCA Selector’s MIT license and attribution, then builds a new workflow and interface around its proven engine.
A repair workspace
Onboarding, detached controls, world tabs, selection context, a simplified 3D view, clearer settings, and safer confirmation flows.
02Workflow
One world, three ways to understand it
See the repair before you make it.
Read terrain as structure.
The isometric view turns real surface colors and terrain heights into a simplified model. Rotate and tilt it to understand cliffs, cuts, builds, and biome transitions before selecting anything.
Work at chunk precision.
Return to the full 2D region map for exact selection. Filters and overlays help locate chunks by age, status, biome, entities, structures, coordinates, and other stored data.
Keep the destination in sight.
World tabs and selection context make copy-and-paste work easier to follow when moving a build or clean region from one open save to another.
03What it fixes
Repair is a workflow, not a magic button
Keep the good. Replace what is broken.
World Repair Studio helps you perform deliberate region-level fixes. It does not automatically diagnose every corrupt save; it gives you clearer ways to inspect, isolate, transfer, export, or remove the chunks involved.
Regenerate terrain
Select explored or damaged chunks, back up the world, then remove only those chunks so Minecraft can generate them again.
Move a build
Copy a selected area, switch world tabs, and paste it into another compatible Java Edition save.
Inspect anomalies
Use filters, overlays, coordinates, and visual context to narrow a problem before making an edit.
Export first
Preserve selected chunks or images outside the working save before a destructive operation.
04What changed
The usability fork
MCA power, reorganized around people.
Full-world workspace
The map becomes the canvas. Translucent tool, view, and selection controls stay close without burying the world in windows.
World tabs + clipboard context
Open saves remain visible while selections move between them, with clearer copy, paste, export, and destination context.
Isometric terrain view
A purpose-built 3D interpretation uses cached surface colors and height data without pretending to be a second Minecraft renderer.
Safer destructive moments
Readable confirmations, a clearer welcome screen, and explicit disabled states make it harder to lose track of what an action will affect.
Native community packages
Release 1.0.0 ships installers for Windows, Apple silicon and Intel Macs, Debian/Ubuntu, Fedora/RHEL, plus a universal JAR.
Real application captures
The same world, from every useful angle.
Drag or scroll horizontally to move through the workspace.
Release 1.0.0
Choose your platform.
Windows x64
Native installer for 64-bit Windows.
Download .exe ↓Apple silicon
For M1, M2, M3, M4, and later Apple chips.
Download ARM64 .dmg ↓Intel Mac
For Intel-based Mac computers.
Download x64 .dmg ↓Debian / Ubuntu
64-bit package for Debian-based systems.
Download .deb ↓Fedora / RHEL
64-bit package for RPM-based systems.
Download .rpm ↓Universal JAR
Portable archive for systems with JavaFX available.
Download .jar ↓Community builds are not notarized or commercially code-signed. Your operating system may ask you to confirm that you trust the download.
Open-source lineage
Built on MCA Selector.
Made for the next repair.
Original MCA Selector copyright © 2018–2026 Querz. World Repair Studio modifications copyright © 2026 Samuel Barron. Distributed under the MIT License.