The best deck builder I've ever played and also the best roguelike I have ever played. The sheer amount of synergies in the card pool show genius game design and the balancing is incredible.
I lost control of my life when I started to play it. I beat the regular runs with each of the four characters at least once and I still have a lot to understand about them. I quit the 4th chapter runs because I got scared. This game is amazing.