The megathread is a curated, centralized repository hosted primarily on GitHub and the Internet Archive. It was created by the moderators and community members of the r/roms subreddit to counter a major problem: the proliferation of sketchy, ad-ridden emulator sites that bundle retro games with malicious software.
It spans everything from early arcade cabinets and 8-bit home consoles to eighth-generation systems. How to Find and Access the Megathread r roms megathread