The tide is coming in. So are the crabs.

Sandcastle Defense is a tower defense game on a sunny beach. By day you dig the sand for supplies. By night, waves of crabs march out of the sea for your castle. And every few nights the tide itself rolls in and takes back whatever you built too close to the water.

YOUR FINGER IN THE FIGHT
Tap a crab and it takes the hit. When the Big Wave is ready, send it in and watch it wash most of a crowd away. Catch the golden crab before it scuttles off, and find the weak spot of the armoured guardian. Every night you hold ends in a finale.

WHERE YOU BUILD DECIDES THE NIGHT
Every dusk, arrows on the sand show which lanes tonight's crabs will take and how many on each, and the boss gets a crowned lane of its own. A tower by a dune stands on high ground and reaches 15% further. A tower by a rock is in cover and takes half the damage from blasts, the tide and the warship. Bombers go for your densest cluster of towers, so a packed block is a target. Burrowers come up on marked circles, so a trap can wait for them. Lay up to three sandbags and the crabs on that lane step aside to the next one.

TOWERS THAT WORK IN PAIRS
A catapult hits crabs soaked by a sprinkler 25% harder. A harpoon hits flyers 20% harder inside a lit lighthouse's glow. Hold a tower over a cell and its partners light up.

FOUR SHORES, FOUR LAYOUTS
· Home Beach — dunes and rocks, where the siege begins.
· Pirate Cove — a warship in the bay, and every other volley lands on your front line.
· Volcano Shore — lava vents: towers beside them hit 20% harder, and get scorched at every eruption.
· Ice Bay — frost slows towers down, unless a lit lighthouse keeps them warm.

BUILD OUT OF WHAT'S ON THE BEACH
Bucket towers and catapults, sprinklers that bog crabs down, the Harpoon Cannon for anything airborne, the Tide Coil's chain lightning, a Lighthouse that makes its neighbours stronger, and a Pit Trap that swallows crabs whole.

CRABS THAT DON'T PLAY FAIR
Armoured crabs shrug off small hits. Poison crabs leave your castle bleeding. Jumpers leap your traps. Shielders bubble the crab in front of them. Every fifth night something much bigger walks out of the surf. And from wave 20 come the veterans, marked with a gold chevron: every hit on them loses a quarter, unless it is a Heavy Boulder or a Pearl Slug.

NOTHING IS EVER WASTED
Every run pays pearls, win or lose. Spend them in the Pearl Workshop on five upgrades that stay with you: thicker walls, sharper shells, richer tides, a longer view and a faster rhythm. Each has a fourth tier, locked until you beat the guardian of a named shore.

YOUR CASTLE, YOUR CREST, YOUR FRIEND
Hang a crest on your wall, grow the keep with towers, walls, a gate and a moat, and feed the bird by the pond: it grows, helps, and follows you to every shore.

LEADERBOARDS BY SEASON AND BY WEEK
An optional global leaderboard for each shore: this season's best runs, this week's, and the Season 1 archive. Look at it any time; your score goes up only if you join.

PLAY OFFLINE
No account, no sign-up, no internet needed.

FAIR ABOUT ADS
No banners. No ads that interrupt you. The only ads are ones you ask for with a tap, always in exchange for something extra: stand your castle up again after a defeat or replay that night from dusk, reroll a level-up choice, call the pirate ship's volley, salvage a whole wreck, double the day's free tide gift, or add half again to a run's pearls once your revives are spent. Never tap them and you will never see one. No in-app purchases.

Dream.motion

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