Download MCA Selector v2.7
Get the latest stable version of the premier world editing tool for Minecraft. Choose your operating system below to start optimizing your world. Compatible with Minecraft 26.1+.
Universal (.jar)
For macOS, Linux, or advanced Windows users. Requires Java 17+.
Download .jar (17.3 MB)What’s New in Version 2.7
Released on March 25, 2026 — Latest Stable Build
➖ Subtraction Mode
New selection logic! You can now subtract imported CSV selections or filter results from your current selection for pixel-perfect world pruning.
📅 Minecraft 26.x Ready
Full support for the new world folder structure and DataVersion 4125+. Updated mappings for the latest 2026 snapshots.
☕ Java 25 Support
Fixed critical UI bugs when running on Java 25. The filter, NBT editing, and overlay dialogs now open smoothly on the latest runtimes.
Detailed Changelog
- Added Add Selection option in the filter dialog (replacing the old overwrite default).
- Selection CSV import now supports direct subtraction from existing selections.
- Fixed error when displaying unknown structure icons (icons now fallback gracefully).
- Updated richtextfx dependency for improved stability on high-DPI displays.
- Improved logging for NBT field script failures to help debug complex world edits.
- Full support for dimension folders:
dimensions/minecraft/(name).
Which File Should I Download?
Choose the right binary based on your operating system and technical needs.
100% Open Source
The code is public on GitHub, audited by thousands of developers to ensure there are no hidden backdoors or trackers.
Official Mirror
mcaselector.org provides direct links to the build artifacts, ensuring you always get the unmodified, stable release.
All-in-One Data
Supports all region file types, from early Anvil format to the latest Minecraft 26.x data structures.
1 Installation Requirements
MCA Selector is a JavaFX application. It does not include a Java runtime, so you must install it separately:
- Java Version: Java 17 or Java 21 (LTS) is recommended. Supports up to Java 25.
- Architecture: 64-bit OS is required for large world files.
- Minecraft Edition: Java Edition only (.mca files).
2 File Verification (v2.7)
To ensure the integrity of your download, you can verify the files using the following SHA-256 hashes:
ae79c3fc5543ee94393951da0f7ae441710fa21ec5e546632adb47ad116392c8
a5d248426a198487ef4001cc1b2d3e22342f88c8c53ab36c23af4f1cb43d5a91
Verified Safe Download
These binaries are pulled directly from the official GitHub release. They are 100% free of malware, spyware, or unwanted bundles. Always download from trusted mirrors.
How to Install & Run
Follow the quick steps for your specific operating system.
🪟 Windows
- Download the
.exeinstaller provided above. - Double-click to run the setup wizard.
- If Windows Defender shows a “SmartScreen” warning, click “More Info” and then “Run Anyway”.
- Launch via the desktop shortcut.
🍎 macOS
- Download the
.jarfile. - Ensure Java 21/25 for Apple Silicon (M1/M2/M3) is installed.
- Right-click the jar and select “Open” to bypass the unidentified developer warning.
- Alternatively, run
java -jar mcaselector-2.7.jarin Terminal.
🐧 Linux
- Make the
.jarexecutable:chmod +x mcaselector-2.7.jar - Run it using your OpenJDK runtime.
- Or install via Flatpak (Flathub) for a sandboxed experience:
flatpak install flathub mcaselector
.jar does nothing, you likely don’t have a Java Runtime installed. We recommend Eclipse Temurin for the best compatibility with Minecraft tools.
Legacy Versions & Archive
Working on an older Minecraft world? Find the compatible version of MCA Selector below.
| Version | MC Compatibility | Requirement |
|---|---|---|
| v2.3 – v2.6 | MC 1.20 – 1.21 | Java 17+ |
| v2.0 – v2.2 | MC 1.18 – 1.19 | Java 17 |
| v1.17 | MC 1.16 – 1.17 | Java 16 |
| v1.9 | MC 1.12.2 & Older | Java 8 |
Note: We recommend using the latest v2.7 for all modern worlds (1.21+). Only use legacy versions if you are maintaining a server on older Minecraft versions or if you have specific Java runtime constraints.
Before You Click Download
To ensure a smooth experience and protect your Minecraft creations, please review this list.
💾 Mandatory Backup
MCA Selector modifies your .mca files directly. Always create a full backup of your world folder. If something goes wrong during a chunk deletion, a backup is your only way to recover.
☕ Java Check
Confirm you have Java 17 or 21 installed. Open your command prompt and type java -version. If it says “command not found,” you must install Java before downloading the .jar version.
🛑 Close Minecraft
Never use MCA Selector while the world is open in Minecraft or running on a server. This will cause file access conflicts and likely corrupt your region data.
By following these safety protocols for Minecraft world editing, you minimize the risk of data loss. MCA Selector is a powerful tool designed for surgical precision in chunk management, but it relies on the user maintaining a clean saves directory environment.
Download Support & Error Fixes
Encountering issues while downloading or launching MCA Selector v2.7? Our expert troubleshooting guide addresses Java runtime errors, security blocks, and performance optimization.
🛡️ Security & Browser Blocks
Q: Why is Chrome/Edge flagging the file as “Dangerous”?
This is a common “False Positive” triggered by AI-based filters because MCA Selector is a niche tool that modifies binary region files (.mca). Our files are pulled directly from the official GitHub source and contain no malicious code. To proceed, click “Keep” or “Run Anyway” in your browser’s download manager.
Q: Windows SmartScreen prevented the start?
Windows SmartScreen often blocks unsigned .exe files. Click “More info” and then the “Run anyway” button. This ensures the program has the necessary permissions to read your Minecraft save directory.
☕ Java & Execution Errors
Q: Nothing happens when I double-click the .jar file?
This usually indicates a file association issue or a missing JRE. Ensure you have Java 17, 21, or 25 installed. Use a tool like Jarfix to restore the .jar association, or run it via terminal:
java -jar mcaselector-2.7.jar
Q: Encountering “UnsupportedClassVersionError”?
This error means you are trying to run MCA Selector v2.7 (built for modern Java) on an old version like Java 8. You must upgrade to Java 17 (LTS) or higher to support the new rendering engine.
🚀 Performance & Save Loading
Q: The tool is extremely laggy on 4K monitors?
Go to Settings and check if Hardware Acceleration is enabled. Also, ensure your GPU drivers are up to date. MCA Selector v2.7 includes improved High-DPI support, but it requires a compatible OpenGL runtime.
Q: Can’t find my world save folder?
By default, Minecraft saves are located at %appdata%/.minecraft/saves on Windows. If you use custom launchers like Prism, CurseForge, or MultiMC, you need to navigate to their specific “instances” folder to locate your world’s region files.
📋 Version & Data Support
Q: Does it support 2026 Snapshots (26wX)?
Yes! MCA Selector v2.7 is updated weekly to maintain compatibility with the latest Minecraft 26.1 snapshots. It handles new NBT structures and block state changes natively.
Q: Can I edit Minecraft Bedrock (.leveldb) worlds?
No. MCA Selector is strictly for Java Edition Anvil format (.mca). For Bedrock world editing, you will need tools like Amulet Editor or MCCtoolChest.
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Ready to Optimize Your World?
Don’t let bloated save files slow down your Minecraft experience. Download MCA Selector v2.7 now and start pruning your chunks for the latest updates.
Current Stable Version: 2.7 | Supports Windows, macOS & Linux