MAME Plus! is an unofficial version based on MAME / MAME32. but very popular due to the extra features and games it adds above and beyond official MAME.  MAME Plus! project started in May 2002 (first version 0.60), initially intended to implement Unicode support for MAME. Now MAME Plus! has many features to make it a great unoffical build. Download at our MAME page.