In my experiabnce. Mame4All works awesome. Easy to customize the buttons and 99% of the games worked. Now…Mame4All will not run a trackball I’ve been looking and looking for an answer. I want my trackbll to run for Centipede, Millipede, Tempest, Missile Command…games like that. Also I’m a Mortal Kombat fan, MK2 & MK3 won’t run either. I chose different emulators for Mortal Komabt, I went with lr-Mame4All. Works great. Only now I’m having a problem trying to configure the buttons. For my trackball games I use AdvMame but only Millipede works.