Use the Marble Blast Haxe Port instead of the original version. It is a full rewrite designed to run natively on modern macOS with identical physics.
To download and play and Marble Blast Platinum (now primarily available through the community-driven PlatinumQuest project), follow this guide for your platform. Quick Download Links Marble Blast Gold Marble Blast Platinum Downl...
Download the full ZIP version from MarbleBlast.com . Extract the folder anywhere on your computer and run the executable. Use the Marble Blast Haxe Port instead of