I've gone down a deep rabbit hole working on a strange new project: a standalone After Dark module player for modern macOS. No OS emulation or ROM required -- just the original classic Mac OS AD module files! I can't believe this is working!
@halcyon
@csilverman
@root42 Nice. I have a similar strategy running as an unpublished side project that I have poked at occasionally for many years. (No Metal, it's OpenGL, that's how old it is!)
Be warned that you'll need increasing amounts of classic Mac OS re-implementation as you add more modules.
You may find the open-sourced code of ARDI Executor useful as a reference for what one reverse-engineer determined that Mac OS did: https://github.com/ctm/executor