Antonio Prohias' black and white comic strip "Spy vs. Spy" debuted in Mad Magazine in 1961. Prohias, originally from Cuba, had to flee to the United States when his parodies of the newly-installed dictator Fidel Castro led to threats of arrest and execution. He found a creative outlet, however, in Mad Magazine, and his warring cartoon spies continued to antagonize one another until 1987. "Spy vs. Spy" also become the subject of animated cartoons on MADtv, several video games, and Milton Bradley's 1986 board game Mad's Spy vs. Spy: An Explosive Tunnel-Building Game of Risk and Rivalry, in which players race to build a series of tunnels and steal as many bombs as possible. In true MAD style, the box makes the facetious claim that Spy vs. Spy is a 0-player game, the only one of its kind.