A clone game zip will not work if you delete its corresponding parent game zip. CHDs: The Missing Piece for Hard Drive Games
MAME ROMs are often distributed in three different structures, which dictate how files are organized and how much space they consume:
Many popular multi-system emulation frontends, like RetroArch (via specific MAME cores) and Batocera, maintain excellent support for the 0.235 reference set. Understanding MAME ROMsets: Full, Split, and Merged mame 0.235 roms
For users looking to preserve their own arcade hardware or explore this version:
: The parent game and all of its clones are packed together into one single zip file. Pros : Keeps your ROM folder clean with fewer total files. A clone game zip will not work if
To avoid "Missing Files" errors, always look specifically for a or use a ROM management tool like ClrMamePro to update older sets. CHDs: What Are They?
: It is highly recommended to use a ROM set specifically labeled "0.235" with MAME 0.235. Using older ROMs (e.g., from version 0.139) often leads to "missing file" errors as the expected checksums have changed. File Structure : MAME ROMs are typically stored as Pros : Keeps your ROM folder clean with fewer total files
| Format | Description | Space Efficiency | Ease of Use | | :--- | :--- | :--- | :--- | | | All clone ROMs are stored inside the parent ZIP. Each game is a single file. | High (reduces duplicate files) | Good (no separate parent files required) | | Split | Parents and clones are separate ZIPs, but clones reference the parent. | Medium | Moderate (must keep parent files) | | Non‑Merged | Every game (parent and clone) is a standalone ZIP containing everything it needs. | Low (lots of duplication) | Best (every game runs on its own) |
MAME is designed to read zipped ROMs. Unzipping them is generally unnecessary and can cause issues with emulator recognition.
ROM sets in MAME are version-specific. Because the project prioritizes historical accuracy, ROMs are frequently re-dumped when better copies or more information about the original hardware becomes available. MAME Documentation Matched Sets