Over the years, various individuals and groups have organized treasure hunts with hidden Bitcoin rewards. These hunts typically involve solving puzzles, riddles, or clues that lead participants to private keys containing Bitcoin or other cryptocurrencies.
One of the most famous instances was the "Montecrypto: The Bitcoin Enigma" game, released in 2018. Players had to solve a series of complex puzzles within the game to access a wallet containing one Bitcoin. The hunt gained global attention, with players from around the world competing to solve the mystery.