SovietMoon is an AI game system that expands Tranquility Base into an exciting and true Soviet vs. US Space Race. SovietMoon pits the US players against the Soviets as each try to achieve the first manned lunar landing. The game can be considered semi-cooperative but it is still a race to be the first to land on the moon. The SovietMoon deck provides an AI opponent that is challenging and difficult to beat. Players may find opportunities to cooperate for overall success, but superior game-play and completion of multiple missions in a single turn will benefit players the most. —description from the publisher