Reef Sweeper

Reef Sweeper takes the classic tile-clearing puzzle underwater. Pick a reef size — an 8x8 cove with 10 hidden sea mines, a 10x10 lagoon with 20, or a 12x12 deep reef with 30 — and tap your way across the grid. Every tile you uncover shows a number telling you how many mines are hiding among its neighbors, and opening an empty tile cascades outward to clear the safe water around it automatically. Long-press a tile to drop a marker on a suspected mine, and use the timer and flag counter to track your progress. Uncover every mine-free tile without triggering one to win: the reward scales with how quickly you clear the board, paid out in Coins that build up across every dive. Trigger a mine and the reef lights up to show you where it was hiding, ready for another attempt. With a hand-painted underwater backdrop, simple tap-and-hold controls, Sweeper is a relaxed, classic minesweeper experience for players of all ages.