Hinterlands the 6th expansion to Dominion. It includes 26 new Kingdom cards to Dominion, including 20 Actions, 3 Treasures, 3 Victory cards, and 3 Reactions. The main theme is cards that do something immediately when you buy them or gain them.
The world is huge and your kingdom tiny. Tiny when compared to the world, that is; it’s moderate-sized when compared to other kingdoms. But in a huge world like this one – huge when compared to smaller worlds anyway, if such things exist; it’s moderate-sized when compared to worlds of roughly the same size, and a little small when compared to worlds just a little larger – well, to make a long story short – short when compared to longer stories anyway – it is time to expand your borders. You've heard of far-off places – exotic countries, where there are pancakes but not waffles, where the people wear the wrong number of shirts, and don't even have a word for the look two people give each other when they each hope that the other will do something that they both want done but neither of them wants to do. It is to these lands that you now turn your eyes.
Dominion: Hinterlands is an expansion, and can't be played by itself; to play with it, you need Dominion, or a stand-alone expansion to Dominion (e.g., Dominion: Intrigue first edition). They provide the Basic cards you need to play (Treasure, Victory, and Curse cards), as well as the full rules for setup and game play. Dominion: Hinterlands can also be added with any other Dominion expansions you have.