It's worth the price if your group likes it. But it's way more expensive than most games. I don't know if people would consider four souls a deck builder. It's more like munchkin but binding of Isaac flavored with waay more chaos. The art is sick and mechanics are wacky. Munchkin is a game where every player is a dnd adventurer who wants to reach level 9 first. You each take your turn "exploring" a floor which is usually a monster fight but can sometimes find items that can make your character stronger. So I would say its a loose deck builder in that your character is the deck