Download the latest MCreator version for Mac and open the DMG image.
Copy MCreator application and paste it in your desired location. In most cases, you should place MCreator application in your Applications folder so it gets properly installed and added to the Launchpad.
NOTE: You can install MCreator anywhere, but make sure that there are only numbers, English alphabet characters, characters .,-_ and whitespaces in the name of the file path. Other characters from other languages might cause unpredictable errors and problems so avoid using them!
Click on MCreator application to launch it. If you see the following message:
you need to add application exception. In the Finder, locate the MCreator application (in the place you installed it in; don’t use Launchpad to do this. Launchpad doesn’t allow you to access the shortcut menu). Press the Control key, then click the app icon. Choose Open from the shortcut menu. Click Open. macOS will remember exception so you only need to do this once per install.
If you are looking for installation instructions for older releases, check MCreator's Wiki for the legacy installation procedure.