mhavocpe
Major Havoc - The Promised End
There are documents here about modifying your PCB, playing MHAVOPE in HBMAME and also patch files (old) for making ROM sets.
Version 1.00 is officially released in the ROMs folder.
Version 1.01 will be released in Jan 2023 with bugfixes. See the issues for more information and to submit bugs.