Corrupt Heart Template

The Corrupt Heart is the final boss of Slay the Spire, encountered in Act 4, also known as the Final Act or the Ending. It is the core of the Spire and the source of this evil. The player can only fight this boss if they have completed Act 3 with all characters minus the Watcher, and have collected all 3 keys. Otherwise, their character will ''fall asleep'' and die, ending the player's run with a ''Victory?'' screen. In-game, the Heart is connected to the ceiling of the background.