I am only not on fakebook or whatever you consider your only true official communication channel. I do not consider anybody an idiot but only expected a sorting mistake. (In a list with thousands of games this can happen easily. I am not into slotmachines; how should I know every single arcade game type on Earth?) I think I found the page now.
New working clones
unknown 'Pac-Man' gambling game (set 2) [Nnap]
That the game had a secret mode switch for nations where import or operation of gambling equipment was illegal is interesting. I expected that the default dipshit eh switch setting of MAME would make it boot into that gambling game when marked so. Or does one by design need to hold down a button during each boot to reveal the gambling mode, so the arcade owner could at any time pull the main fuse of the room in case that cops came and so every machine booted itself into the innocent game?
Or has this not a hidden second game at all but includes mixed game rules like this "Pac-Man Battle Casino"?