After many dungeon runs in Hearthstone, I decided that I liked this idea of roguelike deckbuilder games and picked up Slay the Spire. It was exactly what I wanted, and I immediately enjoyed a four-hour binge.
A great virtue of Slay the Spire is that it is designed to be what it is. The Hearthstone dungeon run is grafting the idea onto an existing game, which has been done quite well in Blizzard games (tower defense, DOTA) but ultimately bears its full flower in a dedicated game. Hearthstone’s dungeon run starts with much greater resources in terms of art, already developed cards and mechanics, and a minion-based combat mechanic. Hearthstone’s dungeon run is bigger and bolder, flashier, and more random and frustrating. Bringing along the infrastructure of Hearthstone brings along the baggage of Hearthstone.
Slay the Spire almost certainly must have configurations that are impossible. It is a roguelike still in early release. It seems to have less opportunity to stack perverse randomness on top of more perverse randomness. With practice, I have become rather good at the Hearthstone dungeon run, but I would be surprised if I could sustainably win more than a third of the time. I get the sense that Slay the Spire takes the same idea and gives it a much higher skill cap, along with more manageable randomness.