Unfortunately, Pac-Man Party isn't quite as exciting as that tidbit of trivia. In fact, it's downright awful (at least the bit I played of it was). At a recent press event in NYC, I played through some of the game's party mode with the aforementioned Namco rep. We were first asked which character from the Pac-Man universe we'd like to choose.
Wait, there's a Pac-Man "universe?" Isn't it just ghosts and Mr./Ms. Pac-Man?