Lost Cities – The Duel by Kosmos is a tactical card game for two players designed by Reiner Knizia. With a playing time of around 30 minutes, players embark on expeditions to remote areas. The game includes 54 expedition cards, 18 wager cards, and a detailed game board. In each turn, players must weigh which expeditions to start and how many risks to take. By strategically playing wager cards, expedition profits can be increased, requiring careful planning and close observation of the opponent's moves.