pellets leading to a fruit in the center, and another question (which first requires the player to study a city scene) asks "Where would you go to play Prof Pac-Man?", while others require the player to fill in the blank lower-right square of a 16-square grid, with four different fruits (or Pac-Men facing different directions) in each row. On the questions which first require the player to study table settings ("Which was the correct sequence?" or "How many plates were (shape)?"), fruits would appear on the plates and Pac-Man would move from right to left as he ate them, if they were answered correctly, and for the questions which first require the player to study the light-up keys on giant telephones of various colors ("Which number was dialed?"), the receiver would come off the telephone and Pac-Man would appear to speak into it (again, if they were answered correctly). Development The original idea for Professor Pac-Man came from world champion foosball player Johnny Lott and Ed Adlum, the publisher of RePlay. They approached Bally Midway, only to be told that the company had no interest. A few months later, Lott, working the National AMOA Trade Show in Chicago, Illinois, noticed Professor Pac-Man cabinets on display. He threatened legal action, and Bally Midway agreed to a royalty contract. The gameplay is different than Lott-Adlum proposed design, which was much closer to a traditional videogame and featured questions being eaten by the Pac-Man character instead of pellets. It failed to create much interest in the marketplace. Professor Pac-Man is based on a Zilog Z80 microprocessor running at 1.79 MHz and uses two banks of 512k ROM (more than any other arcade game from the time). The game was written in the Forth programming language by Rick Frankel, with graphics by Mark Steven Pierce and Sue Forner, and sound and music by Marc Canter. Legacy A Professor Pac-Man character appears in the Pac-Man World series. He looks similar to the character depicted in the Professor Pac-Man arcade game, except with the addition of a white mustache and a design closer to the official Pac-Man design. References External links Professor Pac-Man at the Arcade History database 1983 video games Arcade video games Arcade-only video games Pac-Man arcade games Midway video games Quiz video games Unauthorized video games Video games developed in the United States