Logic puzzle iOS

Light every island.

Sail an archipelago of 400 painted islands and light each one. Place a lighthouse in every row, every column and every coloured region, and never let two of them touch. Every island has exactly one answer, and logic always gets you there.

Coming soon to the App Store

How to play

How to play

  1. One lighthouse in every row, and one in every column.
  2. One lighthouse in every coloured region.
  3. Lighthouses can't touch, not even diagonally.

Every island has exactly one solution, so you never have to guess.

Your tools

Tap to think

Tap a cell once to mark it as water, your note that no lighthouse goes there. Tap again for a lighthouse, and once more to clear it.

Undo is free

Undo and Reset are always free, as often as you like.

Light beams

Turn on the beams to see which rows and columns are already lit.

The lantern

Stuck? The lantern shows you what doesn't fit yet, and can explain the deduction behind it.

Ten coasts, 400 islands

Sail from Kelp Coast out to the open sea. Each coast adds a new twist.

  1. Kelp CoastIslands 1–40
  2. Tide PoolsIslands 41–80
  3. Fog BankIslands 81–120
  4. Coral ShelfIslands 121–160
  5. Aurora StraitIslands 161–200
  6. Open SeaIslands 201–240
  7. Lantern ReachIslands 241–280
  8. Cinder ShoalsIslands 281–320
  9. Beacon DeepIslands 321–360
  10. The Long NightIslands 361–400
The archipelago chart, 11 of 400 islands lit: Kelp Coast, with 11 of its 40 islands lit, and Tide Pools, islands 41 to 80, still locked.

Life on the islands

Set Sail

One tap takes you to your next island, right where you left off.

Daily

A fresh island every day, the same one for everyone.

The Keeper's Cabin

The lighthouses you collect along the way, on display in your cabin.

Your own pace

Each island shows its difficulty, from Gentle up, and a timer that never runs out. Hide it if you like.

No hearts. No lives. Never locked out.

Lighthouse is free to play, and nothing stops you from playing the next island: no hearts, no lives, no energy. There are no ad breaks before island 20. After that, a short ad can play between islands, and a one-time purchase removes them. Undo is always free.

Hints can also cost coins or an optional ad. Coins come from playing, and the Shop sells optional coin packs.

Lighthouse's home screen: a painted lighthouse island on Kelp Coast, 11 of 40 lights, a Set Sail button for island 12, and tabs for the chart, the daily island and the cabin.
Set sail
The archipelago chart, 11 of 400 islands lit: Kelp Coast, with 11 of its 40 islands lit, and Tide Pools, islands 41 to 80, still locked.
The archipelago
A Gentle puzzle on Kelp Coast, island 12: a seven by seven island in coloured regions, with three of seven lighthouses placed, their beams lit, and water marked on several cells. Below are the Beams switch and the Undo, Reset, Place, Water and Hint tools.
Island 12
A hint on island 12: the lantern says something here doesn't fit yet, and offers to explain the deduction for 30 coins.
Ask the lantern
Island lit: island 12 on Kelp Coast solved in 1 minute 24 seconds, 7 of 7 lights, 25 coins earned, and a button to sail to island 13.
Island lit
The Keeper's Cabin: the Coastal Classic lighthouse on display, and a shelf of six lighthouses to collect, two of them already owned.
The Keeper's Cabin

Questions

Do I ever need to guess?

No. Every island has exactly one solution, and you can always reach it by logic.

Can I lose?

No. There are no hearts, lives or energy, and the timer never runs out. Take as long as you like.

Is Lighthouse free?

Yes. It’s free to play, with no ad breaks before island 20. After that, a one-time purchase removes the ads between islands.

How many islands are there?

400, across ten coasts, and a new daily island every day.

What do I need to play?

An iPhone with iOS 17 or later. Lighthouse is coming to the App Store first.

Is there an Android version?

Not yet. Android is planned, and we’ll share news here when it’s ready.

Play Lighthouse

Coming soon to the App Store