The decrypted roms are hacked to work in NRX I am not talking about the C roms I am talking about the Program roms. In some ways the game is not working properly due to the fact that NRX is meant for the non protected games around 1997 and before. NRX , Kawaks does not fully emulate the game properly and there are missing effects. Mame however emaulates this and has code which runs the protected game how it is meant to run. I rather use an emu that is able to emulate a game more closer to original hardware than a emu that needs hacked rom sets to work. I am for the game but also true emulation.