Balls burst out of the castle gates on their own, charge and fill the empty space. Balls that collide pop.
When the ring at the top right fills, the game slows and 3 cards open: pick one.
Traps and shapes land once, work for their lifetime, then vanish. Pick them again and a stronger one comes.
Tapping the screen speeds up time (up to 3x).
Destroy the rival castle! A castle at 0 loses; when 2:30 runs out, the one with more HP wins.
Level 1
COLLECTION
Shards from end-of-level chests unlock the Rare and Epic tiers of your cards. On the card screen, a card can't come stronger than the highest tier you unlocked.