This is the 3rd addition to Dominion. It adds new Kingdom cards to Dominion and as it is an expansion, you will need Dominion, or Dominion: Intrigue to play the game.
THERE ARE STRANGE THINGS GOING ON IN YOUR BASEMENT LABORATORIES. THEY`RE LOOKING FOR A WAY TO TURN LEAD INTO GOLD, OR AT LEAST INTO SOMETHING BETTER THAN LEAD. HIS EXPANSION ADDS NEW KINGDOM CARDS TO THE DOMINION BOARD GAME, AND REQUIRES A COPY OF DOMINION OR DOMINION: INTRIGUE TO PLAY.