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5d ago

Afterglow Runs Original After Dark Screensavers on Modern Macs

It recreates original 68k module behavior with a Musashi-based emulator that reimplements Mac APIs so users can run vintage After Dark modules on current macOS without Apple ROMs.

Image
Flying Toasters classic After Dark screen savers
The Afterglow app icon beside the white italic afterglow wordmark on a navy-to-violet background.

Overview

  • Developer Jeff Halter has published Afterglow as a focused emulator designed to run original 68k After Dark module code rather than remakes or ports.
  • The app uses the Musashi 68k CPU emulator and a reimplementation of key Macintosh Toolbox and OS APIs so no Apple ROM or classic Mac OS install is required.
  • Afterglow includes a native macOS screen saver plugin and user features such as full-screen mode, a randomizer, multimodule support, a CRT shader, and module controls.
  • Modules are not bundled with the app but can be imported by dragging module files, disk images, or archives into Afterglow, and the app can browse and install releases from the Internet Archive.
  • Halter frames the project as software preservation aimed at making Berkeley Systems’ 1990s visuals easy to run today while leaving module provenance and licensing for users to resolve.