How to play

• Every storm tide wedges the little Pebs, hermit-crab children in pearl shells, high inside the coral castles of the reef. You are the tide's friend: bring them down to the sand.
• Tap a group of two or more touching blocks of one colour: it pops, and everything above falls straight down. A single block cannot pop.
• A Peb that reaches the sand runs home to its family. Save every Peb to win.
• Order matters: a pop can bring two blocks of one colour level so they join, or take away the partner a Peb needed. Save them in the fewest taps for three stars.
• Drag to turn the castle: Pebs may be at the back.

Features

• Endless levels, each checked by a solver: always fair, never luck, and bigger and trickier the further you go.
• Undo is always free. Free, no sign-up, works offline and installs as an app.