I was really, really disappointed with this game. And let me explain why.
The art is amazing, especially if you're into Old SNES games(Think metroid, castlevania) as it is drawn in that style.
You get to play as a monster controlling a dungeon, trying to stay a live while also trying to kill 10 heros to win the game. I wont go into detail on how the game is played, but its basically a card. game.
You cant build huge and cast dungeons as you might think, as your dungeon is limited to 5 rooms. But honestly, thats ok, I got used to that after my 3rd game.
After I've played it however, for my 5th or 6th game, the game really got stale. It has a kingmaking problem, IE, a person who manages to build a good dungeon at the start of the game will probably rush through. Basically, while it gives you a huge deck of cards to play with, you'll find yourself using the same strategy over and over.
Trying to find a good mixture between strategy and luck, I feel that this game found a very awkward middle point, which honestly it would be way better if it swinged one way or the other.