According to MAME32 Plus! 0.82u2:

Bal Cube
Bang Bang Ball (v1.05)
Blazing Tornado
Dharma Doujou
Grand Striker 2 (Japan)
Lady Killer
Moejo Gonta!! (Japan) | Clone of Lady Killer
Last Fortress - Toride
Last Fortress - Toride (Erotic) | Clone of Last Fortress - Toride
Mahjong Doukyuusei
Mahjong Doukyuusei Special
Mahjong Gakuensai (Japan)
Mahjong Gakuensai 2 (Japan)
Mouja (Japan)
Pang Poms
Pang Poms (Mitchell) | Clone of Pang Poms
Sankokushi (Japan)
Sky Alert
The Karate Tournament
Toride II Adauchi Gaiden

The system was getting games from 1992-1996 and most games currently lack sound.

Edit: Bah, someone else posted while I was writing this up. I'd delete this if I could.