The most dangerous arcade game ever made ?!

The story is told that players who used this game suffered from amnesia, nightmares at night and a tendency to suffer with playing other video games. It was very addictive and changed the behavior of the players in a short time. It reportedly suddenly disappeared without a trace within a month of the publication of Polybius in 1981. Today there is no evidence that the game has existed until now. However, thousands of people say they have played Polybius in the past.