Tile Sweep

About the game

Tap a tile to scan the seabed. A glowing number tells you how many sea urchins hide in the 8 tiles around it. Use those readings to work out where every urchin is, and clear all the safe tiles without touching one.

Tile Sweep is a calm logic puzzle set in a bioluminescent deep-sea trench. Every board is checked by a solver before it reaches you, and levels 1 to 40 can always be finished by reasoning alone, with no guessing.

How it plays

• Tap to scan a tile. Empty areas open up in a ripple.
• Hold a tile to drop a marker buoy where you know an urchin is, or switch to MARK mode.
• Your first scan of a level is always safe; a glowing beacon shows a good place to start.
• No timer pressure. Your best time for each level is saved if you want to beat it.

New tiles as you dive deeper

• Current tiles (from level 21): an arrow tile counts only the urchins in the direction it points.
• Keel tiles (from level 41): no number, just ODD or EVEN for the urchins in its whole row and column.
• Pressure tiles (from level 61): they count the safe tiles around them instead of the urchins.

Hold any special tile to light up the tiles it counts. A short card explains each one the first time you meet it.

100 levels

Five sections, from the shallows down to the deepest zone, with boards growing from 9x12 to 12x16. A survey map tracks the levels you have cleared and your best times.

Stuck?

Watch an optional video for a hint that reveals a tile proven safe, or to continue once after hitting an urchin.

Also

• Number dots option for colour-blind players.
• Sound and vibration settings.
• Progress is saved on your phone; no account needed.

Tile Sweep is free and shows ads: a banner, an occasional ad between levels, and optional reward videos for hints and continues.