A love letter to golden-age arcade strategy

CASTLE KABOOM

BUILD. BLAST. REBUILD.

$2.99 · iPhone & iPad · No ads · No tracking · Works offline

THE FLEET IS COMING. BUILD ANYWAY.

CLAIM

Choose your castle on a procedurally shaped coastline. Every coast plays differently.

ARM

Drag cannons inside your walls. Every castle you enclose grants more guns.

BATTLE

Hold a finger on the sea and your batteries volley at the crosshair. Sloops swarm, galleons pound, ironclads shrug off hits.

REBUILD

Your walls are rubble. Drag and rotate puzzle pieces to seal a castle before the clock hits zero — or lose a banner.

NEW — The Daily Siege: one date-seeded battle a day, the same seas for every commander worldwide. One attempt, streaks on the line.
8 voyages with escalating fleets — then the Endless Tempest
12 Trials of the Keep: hand-built challenges with twisted rules
Three difficulties, from Calm Seas to Storm Tide's black armada
Upgrade your guns and walls: Royal cannons, Obsidian masonry
Combo chains, perfect routs, and three tiers of enemy fleet
Game Center: global leaderboard and four achievements
Crunchy haptics, synthesized retro audio, and a sea-shanty chiptune
Premium and private: no ads, no tracking, no data collection

ONE MORE WAVE.
YOU CAN HOLD THE KEEP THIS TIME.