Posted Thu Dec 12, 2013 4:17 PM
That's just the original Pac-Man, hacked so that the game initializes with Board 255 as the first board, instead of, you know, Board 1. You play Board 255 and then view the kill screen that is Board 256, where the right half is a jumble of graphical garbage. Well, I say "view," but you can play Board 256, minus the expectation of ever clearing it.
Technically speaking, I'd expect the ROM for the game to be exactly the same as normal Pac-Man, except for the value of a single byte. This collection isn't really 12 games, but rather 11 games + 1 shortcut to the end of one of the 11 games.
Incidentally, a couple of months ago, I got a chance to see the inside of one of these units. Sadly, there was no text anywhere that identified the processor at the heart of the machine. All I could identify was an 8-MB SDRAM module. There were two glob-tops, presumably the microcontroller and the ROM module containing the software. Considering the size of the games, even if they were all ports (so that they all ran on the same architecture), 8 MB of RAM is way more than you'd need . . . if the CPU were running them directly. I surmise, then, that the large RAM area indicates that there really is an emulation layer at work, translating each game to the system's native language, whatever it is, in real time. Can anyone tell me if my reasoning is sound?