The parent game (e.g., the original Japanese version) contains all the main files. The clone game (e.g., the US version) only contains the changed files. You must keep both zip files in your directory to play the clone. This saves hard drive space.

This is the practical core of your search. Because the demand is for a very specific version, standard ROM sites often won't suffice. Here are the best avenues to search:

So, what new ROMs can you expect to find in MAME 072? Here are a few examples:

Download or ROMVault with a MAME 0.72 dat file . A dat file is a checksum list of all correct ROMs for that version. Running your “new” set through the tool will:

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