This technique later became known as geocaching. It was probably not the first adventure game to offer a prize to the winner, but it was certainly the first to locate the adventure in the real world and require players to turn up at the right place and the right time to claim the prize - a sundial made of obsidian, gold and diamonds, commissioned from the De Beers Diamond Award Winner. In 1982, Mel designed a real world computer quest called PiMania. 1982 | First videogame mass merchandising
