Big City Adventure: London Classic [Download] Play the classic Big City Adventure way, with tons of hidden object scenes and mini-games. Visit historic London in the latest chapter of the hit classic hidden object series. Thousands of hidden objects to find. Over 100 rounds of fun: 51 rounds of treasure hunting, plus an additional 50 rounds of exciting mini-games that guide you to your next destination. Play 10 unique mini-games along the way, including Match-2, Mahjong, Jigsaw, Word Search, and more.