Games like Dragon's Lair , Space Ace , and Time Traveler used Laserdiscs that rot and die. The "hottest" project right now is the "Domesday Duplicator" project, which is capturing raw RF signals from these discs to create perfect, uncompressed CHD files. Expect the file sizes to jump from 500MB to 10GB per game.
A complete MAME CHD collection spans several hundred gigabytes, but many of the listed games remain unplayable or in preliminary emulation stages. To save storage space and bandwidth, focus strictly on the "hot" titles that are verified as fully working: mame chds hot
Keep the parent ROM (e.g., sfiii3.zip ) zipped inside your main roms directory. Games like Dragon's Lair , Space Ace ,
CHDs are losslessly compressed hard drive, CD-ROM, or laser disc images. MAME uses them for games that originally had mechanical storage (e.g., Killer Instinct , Dance Dance Revolution , NFL Blitz , many Neo-Geo CD games, or laserdisc games like Dragon’s Lair ). A complete MAME CHD collection spans several hundred
: Never extract the main game program .zip or .7z file. Place it directly into your roms directory.