The game takes place in the city of Nadir, located in the deepest pits of the underworld. Nadir: A Grimdark Deckbuilder is off to a promising start
: Instead of spending energy, every card you play has a specific color— blue (Sacrum) or red (Profanum) —that triggers a corresponding reaction from the enemy.
The central hook of Nadir is its innovative combat system, which departs from the traditional "energy" or "mana" point systems seen in games like Slay the Spire .