Polybius

Polybius is an one-button arcade game, seen in Captain Blip's Zapateria at the Springfield Mall. It is property of the United States government.

History
At the time Bart Simpson found arcade game Triangle Wars at Captain's Blip's Zapatria, Polybius was located on its right side and had a mark informing it was property of the US government. No further information is given about the gameplay or anything else.

Behind the Laughter

 * It is a reference to the legendary arcade game, which supposedly existed in,  in 1981 and provoked several negative symptoms on its players, such as extreme addiction, amnesia, night terror, horrible nightmares or even propensity to suicide. According to the legend, Polybius existed for approximately one month, while men-in-black (suspected to be government agents) routinely altered its configuration.