Today, Leila tells us about the mysterious arcade game that appeared and disappeared in a matter of a month in Portland, Oregon. Travel back to 1981, when Polybius was all the rage, with hoards of kids lining up to play. But its side-effects were no fun and games. 

Other media mentioned in the episode: 

• Stranger Things, a supernatural, science fiction television series that premiered on Netflix in 2016
• The Last of Us, an action-adventure dystopian video game
• The Manchurian Candidate, a political thriller novel that was released in 1959
• The Ring, a supernatural horror film released in 2002, remake of the 1998 Japanese film Ringu 
• Stay Alive, a supernatural horror film directed by William Brent Bell and released in 2006
• Minecraft, a crafting and adventure sandbox game