@BobHarris Some PCBs could support multiple romsets, and let's not forget NeoGeo. Like I mentioned before, the cabinet (besides the copyrighted artwork) was not a consideration at all for legality, only the PCB/ROMs. They are most likely MAME based hacks, but it IS possible.
Contributions to the project are always appreciated, so if you would like to support us with a donation you can do so here.
Hosting provided by Mythic-Beasts. See the Hosting Information page for more information.