"Das Millionenspiel" was locked away for 30 years due to copyright difficulties. It was made into a French film, Le Prix du Danger in 1983, based on the same short story by the great Robert Sheckley. But "made for television" was surely more appropriate than for the big screen. It was so visionary and presented in such a way that spectators took it for real and applied at the TV station to take part as the hunted person (I personally read some of the letters). The letters were handed out to the University of Cologne to conduct a psychological survey back in 1972.