This is the 2nd addition to Dominion. It adds 26 new Kingdom cards to Dominion. Its central theme is your next turn; there are cards that do something this turn and next, cards that set up your next turn, and other ways to step outside of the bounds of a normal turn. Dominion: Seaside is an expansion to both Dominion and Dominion: Intrigue. As such, it does not contain material for a complete game. Specifically, it does not include the Treasure, Victory, Curse, or Trash cards. Thus, you will need either the base game or Intrigue to play with this expansion and have experience playing Dominion with either of the first two games. It is designed to work with either or both of these sets, and any future expansions that may be published.