In the mid-1970s, Metagaming Concepts enjoyed healthy sales with their MicroGame series. Most of these, such as OGRE, were small board wargames with a science fiction background. However, Metagaming also touched on the fantasy theme through the Fantasy Trip ruleset for fantasy role-playing, published in 1977 as two MicroGames, Melee and Wizard. In 1978, staying with the fantasy setting, Metagaming launched a new MicroQuest line of games that used the Fantasy Trip rules. The fourth of these, Treasure of the Silver Dragon, published in 1980, offered clues within the game that could lead to the real-world location of a small silver dragon. Whoever found the dragon would win $10,000. Six weeks after the game was published, a graduate student named Thomas Davidson claimed the prize by finding the sterling silver dragon (itself worth $3000) near a solar observatory at Sunspot, New Mexico.[3]
Metagaming used the same promotion the following year for the sequel to Treasure of the Silver Unicorn, the sixth game in the MicroQuest line titled Treasure of Unicorn Gold, written by Metagaming founder Howard Thompson and published by Metagaming as a digest-sized box containing a 44-page book, map, counters, and die.[4] It too offered a prize of $10,000 for the player who found a miniature golden unicorn by following clues within the game.[5] However, no one found the hidden unicorn before Metagaming went out of business in 1983.[6]
In his 2011 book Designers & Dragons, RPG historian Shannon Appelcline noted that "Two MicroQuests written by Howard Thompson – Treasure of the Silver Dragon (1980), MicroQuest #3 and Treasure of Unicorn Gold (1981), MicroQuest #6 – were very uniquely marketed. They were each linked to a treasure hunt. If readers figured out the clues in the books, they could discover a real-world treasure and receive a $10,000 check from Metagaming. The Silver Dragon was found within six weeks but the Unicorn Gold was never discovered; as we will see Metagaming went out of business before the answer to the puzzle could be revealed."[6]: 80 Appelcline concluded, "As for Howard Thompson, he originally promised to return to the field to produce computer games and in the meantime said he would pay the $10,000 reward for the 'Unicorn Gold' to a random entrant if the prize was not found by September 1, 1984. However by 1984, Thompson was no longer returning phone calls and has subsequently disappeared entirely."[6]: 81