The late 1960's: During the "Cold War", secret services pull the strings, and agents are sent around the world exchanging information at top secret meetings.
Despite the fact that they represent one of the big powers of espionage, the players manipulate agents of all countries – only the ones of the direct opposite are out of their control. The aim of the game is to guide the agents in such a way that all countries get the same amount of information. Only this guarantees the global balance of power. However, agents tend to live a double life; aside from their official identity, they also work for another country – undercover.
In Undercover, the countries are represented by the six colors of the color circle: Red, Orange, Yellow, Green, Blue and Purple. During the game, players place and replace the agents adjacently to others with matching colors — the same or one of the two neighbored colors on the color circle. Tiles can be flipped before being replaced, and later flipped again and again. Since the tiles show different colors on the sides - again two colors neighbored on the color wheel - there is a strong deduction element in the game (while younger kids rather will play it using their memory).
For the highest score you need to score for all colors more or less equally. The player who coordinated the meetings of agents of all countries in the most clever way wins the game.