Yes, the satanic panic gripped the nation and got D&D books banned, but another RPG had a brush with authority. Here's why the FBI raided TSR.
On January 17th, 1980, FBI agents were deployed to a small business in Wisconsin in order to investigate a potential assassination attempt against an American executive named William Weatherby who was believed to be in Beirut, Lebanon. The FBI, acting on intelligence passed to them by local law enforcement--a tip that a concerned citizen had, by chance, come across--launched a daring raid in order to protect the life of Mr. Weatherby.
The only problem was Mr. Weatherby didn't exist. He was made up, as was the plot against him. It was all a part of the playtest for TSR's upcoming game, Top Secret.
The evidence, that had so dutifully been passed on to the FBI, was a description of the plot to take out Weatherby, written on TSR stationary. The 'raid' such as it was, consisted of two whole FBI agents who found no gunpowder plot, no poisoned pens, no secret bombs--just a bunch of nerds working on developing roleplaying games. But the FBI's raid was great marketing material for TSR, and it was all thanks to the "realism" of Top Secret.
Top Secret is one of those games that likely couldn't have existed in any other time. It came along between the release of 1st Edition Dungeons & Dragons but before the rise of...