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FONPER

Solo · FREE PLAY

Nurikabe

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Logic & numbers
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Game guide · FONPER

Making your first moves in Nurikabe

Use a short break to learn the rhythm of Nurikabe. Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Look at what changes after your first action. Read the objective before making your first input. Use the example below to understand a decision.

Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.

An idea for your next attempt

Keep the stated aim separate from side details such as animation or appearance. Progress is measured by the game’s own completion or scoring rules. Keep the objective visible.

What you need to achieve

Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Read that aim before choosing your first action. Take a moment to understand the current position.

Follow these playing steps

  1. Shade sea squares and leave islands white.
  2. Every island contains exactly one clue.
  3. Different islands cannot meet along an edge.
  4. Check puzzle verifies sizes, connectivity and forbidden sea blocks.

Using the playing area

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. Use the control method described here for this activity. Check any mode label before starting.

A closer look at one example

An island labelled 1 is already complete, so its edge neighbours must be sea. Focus on why the action is allowed, not only its outcome. Verify the rule before continuing.

Notice this detail

Two numbered islands may not merge into one. Take a moment to reassess the position before continuing. Before your first action, say what you are trying to achieve. Then compare the result with the goal.

Read these answers for extra help

While reading the Guide, what is the goal of Nurikabe?

Here is the relevant explanation: Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.

How do I control Nurikabe?

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.

When I return, what example helps explain Nurikabe?

Keep this in mind: An island labelled 1 is already complete, so its edge neighbours must be sea.

For my first round, what should I watch out for in Nurikabe?

Keep this in mind: Two numbered islands may not merge into one.

While reading the Guide, what format does Nurikabe offer?

Here is the relevant explanation: Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.

For a quick reminder, which play mode does Nurikabe use?

For clarity: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.

While learning, where should I start with Nurikabe?

Here is the relevant explanation: Shade sea squares and leave islands white.

While learning, do I need an account or a payment for Nurikabe?

No player account or payment is needed. Game scores are recreational results, not cash prizes.

For a quick reminder, how can I find Nurikabe again?

Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.

While reading the Guide, how do I report an issue with Nurikabe?

Use the contact form and include the game name, browser, device and the actions that led to the issue. Do not send passwords or payment details.

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