Logic puzzles that never run out.

Six kinds of puzzle, an endless quest for each, a Daily Challenge with a weekly leaderboard, and friends to race. Calm, clever, a few minutes a day.

Free on Android.

Six kinds of puzzle

Every one has exactly one answer, and every one can be solved by logic alone. New to one? A short guide walks you through it on a real board.

One crown in every row, column and colour region, and no two crowns touching.

Split the grid into rectangles. Each holds one number, equal to its size.

Turn the tiles until every pipe joins up into one network.

Draw one path through the numbers, in order, that covers every cell.

Each number counts the dark cells around it. Fill them in to reveal a picture.

Crack the hidden colour code in as few guesses as you can.

Calm, clean and made for a few minutes a day.

Play a stage, take on the Daily Challenge, or send a puzzle to a friend.

Every puzzle has its own road of stages, from gentle to full-size Hard grids. Clear one to open the next. The road never ends.

A surprise puzzle matched to how far you've come. Clear it for points, with bonuses for speed and for clearing several in a row.

Challenge points go on a leaderboard that resets every Monday. See where you stand among everyone playing.

Solved one fast? Send it on. Friends get the exact same puzzle, with your time racing theirs on a live scoreboard. No sign-up.

A puzzle game should respect your time.

Every puzzle has exactly one answer, and you can reach it by reasoning alone.

Ads only come after you finish a puzzle, never before or during one. Extra hints from an ad are always your choice.

Everything is backed up automatically. Sign in with Google to carry it to a new phone.