Midcoast Ghostbuster;149085
In the PS2/Wii version of the game, on Peter's desk in the firehouse are the Zenner cards and the shock machine that he used in his “test” at the start of the first movie.
Also in the Times Square building during the battle with StayPuft there are several posters for a game Fungus dudes, an injoke the game Mushroom Men also developed by Red Fly Studios.
Heh. Fungus Dudes looked more like Super Mario Bros. to me. Either could apply.