For the daring and adventurous, there are many lost cities to explore. They are in the Himalayas, the ever-shifting sands of the desert, the Brazilian rain forest, ancient volcanoes and in Neptune's Realm. With limited resources the players must choose which expeditions to begin. Those with high confidence may want to up the stakes. This increases the rewards for success, but risks more should the expedition fail. The player who finds the right balance will achieve victory. Reiner Knizia is the author of this game designed for two players. It takes about 30 minutes to play.