From the publisher's website:
Koryŏ is a game for 2 to 4 players based in an uchronian and politico-steampunk universe. Each turn, players will simultaneously choose a family of politician of their hand, and play as many cards of this family as they have and wish to. Each family has a value ranging from 1 to 9 which both indicates the number of cards in the family and the number of victory points the player controlling it at the end of the game will score. Moreover, each turn, families grant their specific power to the player controlling it. Thus, efficient handling of these powers is the key to success! A game lasts 8 turns, no more, no less. And each turn, while their influence increases gradually (number of authorized cards in their council), the number of cards drawn dwindle, making choices all the more difficult. Koryŏ is a very smart game, quick to play (10 min), interactive and with innovative game mechanics making it very enjoyable and highly addictive.