Demonslayer: The Siege of Mt. Kunlun (to give its full title) is rather uniquely a deckbuilder that was published in China a few years ago, and is just now making the jump to the United States, thanks to the folks at EOS SAMA.
Demonslayer is clearly a deckbuilder from an earlier generation. It owes the most to two early games in the genre, Dominion (2008) and Ascension (2010). Much as in Ascension, you have two types of currency: money (“clarity”) and attack. You also have two types of cards available for “purchase”: a set tableau of action cards, plus three special attack cards for each player (all either “spells” or “immortals”), and a random tableau of monsters (“heart-eaters”) — which comes out in waves of nine monsters, each of which includes eight acolytes and one tougher boss (“overlord”). As you might guess, money buys action cards, while attack kills monsters.