
Unfallen Bastion is a roguelike tower defense deckbuilder where cards make or break your survival.

Deploy turrets, upgrade them, cast spells in the middle of battle, reshape your deck, and discover devastating combos as you fight to hold back waves of bloodthirsty monsters.
Pick one of the starting decks, then evolve it battle after battle into something uniquely yours by picking new cards or upgrading old favorites!
Take your time to set up the perfect defense before battle begins, or adapt on the fly once the battlefield turns to chaos. Place turrets in advance, redeploy them in real time, and strike at the perfect moment with deadly spells that turn disaster into victory.
Build your defense with cards: turrets, spells, upgrades, and utility tools all come from your deck
Start from different deck archetypes and shape it to your liking after battles or special encounters by drawing new cards
Defend against relentless waves of monsters in semi real-time tactical battles
Play through multiple acts that will never feel the same
Create powerful synergies and discover broken-feeling combinations