How to play
- Find the islands. Draw coastlines with your finger (or tap an edge) so the sea splits into six islands of six squares.
- Number them. Fill in 1 to 6 so each row, each column and each island has every number exactly once.
- Every puzzle has one solution you can reach by logic alone.
The How to Play lesson on the home screen teaches everything in about two minutes. You can close it any time with the X.
Common questions
I'm stuck. What can I do?
Tap Help: it shows where to look, and Explain tells you why. The ••• menu has Check my work, Reveal a square and Reveal an island's coastline. On Gentle levels, Show me how walks through the whole solution.
How do stars work?
1 star for solving, plus 1 for using no hints and 1 for beating the target time.
What is the Daily Island?
A new puzzle every day. Solve any puzzle each day to build your streak; one missed day a week is forgiven.
How do I draw and erase coastlines?
Drag your finger along the lines between squares, or tap a single line. Drag over a coastline again to erase it. Undo and Redo are always there.
Where are the sounds?
Sounds are off by default. Turn them on in Settings → Sound.
Will I lose my progress?
Progress is saved on your iPhone. Deleting the app deletes your progress. If you use iCloud or device backups, your progress may be included in them.
Does it need the internet?
No. It works fully offline, including the Daily Island.
Which devices are supported?
iPhone with iOS 17 or later.
Still need help?
Email us and include your iPhone model, iOS version and, if it's about a puzzle, the level number. I read every message and reply as soon as I can.
support@numberislands.com