Ask API. GET https://whichemulator.wtf/ask answers questions from the same data as this page, and it is the only place the setup steps are published. It takes the question as q and, optionally, this page's path as page, and returns JSON with answer, sources and follow_ups, or Markdown with Accept: text/markdown. No key needed.
curl -G 'https://whichemulator.wtf/ask' --data-urlencode 'q=Which Mega CD emulator should I use on a Mac?' --data-urlencode 'page=/megacd/'Questions it answers:
Guide: /skill.md. This page as Markdown: /megacd.md
Sega Mega-CD, Sega, 1991. Sega CD in North America.
whichemulator.wtf calls its recommendation for each system the Gold Cartridge pick. For the Mega CD, the Gold Cartridge pick is ares.
A mature, accurate standalone Mega CD emulator that also covers the Mega Drive and 32X, so CD 32X games work too. Point it at your BIOS files and it gets on with it.
Runs on Windows · Mac · Linux. Open source. Download: https://ares-emu.net/
BIOS required: Mega CD games need the console's BIOS, and the region has to match the game (US, Europe or Japan). Dump it from your own hardware.
It bolted a second, faster 68000, extra RAM, a scaling and rotation chip and CD audio onto the Mega Drive. That gave us full-motion video games, CD soundtracks and better versions of games like Sonic CD and the Lunar series.
None of it is especially demanding to emulate today; the main hurdle is getting the BIOS files and disc images right.
If you want a normal desktop app, use ares, or BlastEm if you’d rather something lighter. If you already use RetroArch, the Genesis Plus GX core is as good as it gets and runs on practically anything.
Use proper cue/bin or CHD images rather than single ISOs, or you’ll lose the CD audio tracks.
Reference: WEM-MEGACD-MAPO