On the 22nd of May 1980, Japanese company Namco, released the first version of Pac-Man as a game for Arcade Machines. It was a total success at the time and has influenced the history of videogames. To celebrate Pac Man’s 40th Anniversary we have been working on our own pacman versions in 1º ESO. Our students have learnt that even a very simple game like this one turns out to be quite tricky to program. The Simple Pacman was just a project created to solve some of the problems the students were experiencing, but in the end it turned out to be not so simple after all.