Unofficial Highscore.dat (2014/08/22) is released. Highscore.dat is a complimentary file to help Mame in saving high scores.Most Mame games save their high scores by default, but over 2500 games do not save their high scores. The Highscore.dat file tells Mame some additional information and how to read and store the high scores using the /hi directory instead of /nvram.

Released a new hiscore.dat with many clones and new mame 0.154 games added,this .dat also fixes many errors within the old .dat file,thanks to Pierre Monnot and his exellent utility. http://greatstone.free.fr/hi2txt/hi2txt.html

Download: Unofficial Highscore.dat (2014/08/22)
Source: Here