Before reality TV loomed over the landscape, game shows were the networks’ safe bet, a low-stakes investment that hooked audiences with suspense, adrenaline, prizes, schadenfreude, and challenges both intellectual and ... not. The 1980s and ’90s were the genre’s heyday: you could pit your wits against the contestants on Sale of the Century, scream your way through Supermarket Sweep and dream of finding your own Perfect Match. When the format staled – just add celebrities!