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Whats the difference between “split” and “merged” zips?

April 26, 2017difference merged Split zips

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Whats the difference between “split” and “merged” zips?

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Split ROM-sets are when you keep ROM variants separate. For example, ddtod.zip is the USA version (940125) of Dungeons & Dragons: Tower of Doom, and is the “parent” zip (includes all the ROMs necessary to play the game). ddtodj.zip is the “child” zip (includes the different ROMs from the parent) that is used in the Japanese version (940113). To play the Japanese version, you need the common ROMs from the USA version. Also, ddtodr1.zip is another “child” zip for D&D:TOD, but is an older USA version (940113). Merged ROM-sets are just when you glob all the different variants into the parent zip. For example, a merged ddtod.zip would contain the USA version, plus the ROMs that were in ddtodj.zip and ddtodr1.zip. In the case of certain games (like Super Street Fighter II Turbo), merged ZIPs can save you hard drive space.