@SolidHP said in How to get IGS Polygame Master working?:

It is strange that mine only the pcb version loads and if I delete dmnfrnt.zip

There is nothing strange, just a bad dmnfrnt parent romset, and as a clone dmnfrntpcb will pick a few files (not the wrong/missing ones it seems) from its parent so removing the parent is ill advised.
Maybe it's time to follow the rules and read the arcade documentation...