The game was invented by former NASA employee Bob Doyle, his wife Holly, and brother-in-law Wendl Thomis.The array is encased in a red plastic housing, bearing a slight resemblance to an overgrown touch-tone telephone.This makes Merlin one of the earliest digital sequencers as well as an early consumer-level electronic synthesizer.The premise of Merlin was still the same, but for each game completed, an icon was displayed on the screen showing proof of victory.After defeating all nine games, Merlin announces "Brave knight, the challenge awaits" and the 10th quest begins.