A deckbuilder where your cards are your character
There's no class selection screen. Your character is built from the cards you play. Each card you play grants experience to your class. Class levels unlock upgraded versions of cards, and you decide whether to specialize or mix them up as you play, not at the beginning.
One line, not a feature list
Your character is the deck. Nothing else decides it.
Two beats carry the rest. Pick a side to get out of Hollowfort — loyalty decides who is waiting at the gate. And your health is your deck: the same cards you explore with are the ones you bleed.
What success looks like: a few thousand people who finish the prison, argue about which faction was right, and come back for a second loyalty. A cult deckbuilder, not a chart-topper — the roadmap is written for the first.
Where it sits on the shelf
Mechanically it sits closest to the Spire-likes that added a map to walk. In mood it is a prison uprising lit like Inscryption and as unkind as Darkest Dungeon.