I've added these sets: bangbedp, digerman, neopong, mslug5, mslug5a, mslug5nd, matrimbl, pnyaa, samsho5, samsh5bl, svcboot, svcsplus, svcplus, svcplusa, svcchaos, svchaosa, kof2003, kof2003a, kof2003b, kof2k4ex, kf2k4spe, kof2k4se, kof2k3up, kof10th As to what is encrypted or not, I have no idea. I just followed the instructions. Modifications were done to driver.c, drivers\neogeo.c, common.h bangbedp is already in mame, just had to be commented back in and added to driver.c I found 2 mslug5 drivers that were completely different, so one has been renamed to mslug5a until I know which one is the right one. I only discovered your thread after I'd already gotten your stuff from a@h, I figured they are probably the same.