I rarely feel like writing a review for a game, even if I loved it, but seeing the recent mixed reviews angered me enough to write one.

This is a deep and highly polished deckbuilder with loads of different builds thanks to the two deck system.
Comparing it to Slay the Spire or Monster Train is absolutely ridiculous.
Sure, these are also deckbuilders, but they are focused solely on gameplay with just enough plot to justify their existence.
This is a story driven game with dialogue and branching scenarios while still being a damn solid deck building game.
Claiming the game is not replayable is wild - it has two game modes with the option to apply various rule modifiers, daily challenges and mod support with many mods expanding the gameplay readily available.
There isn't any less content here than in other big deckbuilders, but even if there was it would easily make up for it with polish.
If you're tired of story mode you can play brawl and focus on battling, but I still keep coming back to story mode because of each scenario having two branches, all quests having at least two solutions and the emergent gameplay based on the relationships you have with characters.

I've spent thousands of hours playing deckbuilders, be it big names like StS or less known (and less good) ones like Roguebook, and Griftlands is up there with the best of the best.

It was fun while it lasted, but it lacks replayability.

Some of the best dialogue and plot options - actually written for adults who understand a bit of how messy the world is. The "good guys" and "bad guys" really shift around as you play different scenarios. The gameplay is not amazing but it is still pretty solid, and the battles that are verbal arguments added something actually different for the genre. I didn't find it terribly difficult once I got the hang of it, but I definitely died a few times in my first few hours. That's a good balance.