) containing the code from the arcade machine's memory chips. Non-Merged

| Game | CHD Size (approx) | |--------------------------|-------------------| | Killer Instinct 1 & 2 | 250 MB – 350 MB | | NBA Jam / Hangtime | 40 MB – 60 MB | | Primal Rage | 25 MB | | Cruis’n USA / World | 30 MB – 40 MB | | Area 51 / Maximum Force | 30 MB – 50 MB | | Dance Dance Revolution | 200 MB – 1 GB | | Laserdisc games (DL, SA) | 300 MB – 2 GB |

The "Clone" game relies on the "Parent" zip to run (standard for most reference sets).

If you are looking to build a legal collection, the best approach is to purchase the original arcade PCBs and use a ROM dumper to create your own backup sets—a practice MAME was originally designed to support.

CHDs must be placed in specific sub-folders named after the ROM (e.g., roms/kinst/kinst.chd ) for the emulator to recognize them. Why Version 0.159 is the "Top" Choice

These are the standard game files. For MAME 0.159, these are typically stored in .zip format. MAME does not like it when you unzip these files; the emulator reads the data directly from the compressed archive.

A CHD alone is useless without its matching ROM zip. The ROM contains the game’s main program; the CHD provides streaming data.

: These are disk images for arcade machines that used hard drives, CDs, or DVDs (e.g., Street Fighter III Killer Instinct : The 0.159 CHD collection is massive, roughly