This game is hilarious because it looks so bad (the art was literally drawn by a child) but the gameplay is rock solid. It's a roguelike deck builder before roguelike deck builders were even a thing. The dev, Peter Whalen, actually got hired to help create Hearthstone after making it 'cause some Blizzard devs couldn't stop playing this dang game. I always thought Slay the Spire was a rip of Hearthstone's Dungeon Run but it turns out neither of 'em would've even been possible without this little gem.

And I gotta say, it totally holds up! It's got the whole gradual progression and unlocking of new characters and cards thing down pat. The whole Desktop Dungeons-esque dungeon crawling makes it pretty unique as most newer games in the genre get rid of that part in favor of a more streamlined, "tree diagram route" overworld progression thing like in StS or even Darkest Dungeon 2 now.

Personally, I don't have the patience to gradually unlock everything or even beat the final boss, though. Apparently it gets pretty crazy in terms of difficulty, which sounds pretty fun. Unfortunately there's just so many games in this genre now and they all take so long to progress through that my attention gets too divided to properly digest the whole of a single one of these. This is a good one though. And it's arguably pretty important too, historically I mean. So give it a shot!