Nurikabe

Game guide · CHENYANGDA

Nurikabe: a guide for your next round

Bring your attention to one round of Nurikabe. Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Check the relevant rule before repeating a move. Read the objective before making your first input. Choose a clear next step rather than rushing through the instructions.

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

Practice with a purpose

After a move, check what changed. Decide which rule explains the new state before acting again. Make the next step deliberately.

The purpose of your moves

Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Keep that objective in view throughout the round. Try to explain the aim in your own words.

The steps to play

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

Making selections and moves

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. Make sure you are interacting with the game rather than the surrounding page.

Learn from a sample situation

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. Choose a deliberate next step.

One detail worth checking

Two numbered islands may not merge into one. Read the feedback to see why an action did not have the expected result. Before your first action, say what you are trying to achieve. Then compare the result with the goal.

Game-specific help

On this playing page, what is the goal of Nurikabe?

Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.

As a new player, how do I control Nurikabe?

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

On this playing page, what example helps explain Nurikabe?

Here is the relevant explanation: An island labelled 1 is already complete, so its edge neighbours must be sea.

What should I watch out for in Nurikabe?

Here is the relevant explanation: Two numbered islands may not merge into one.

As a new player, what format does Nurikabe offer?

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

Before I begin, which play mode does Nurikabe use?

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

For my first round, where should I start with Nurikabe?

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

Before I begin, do I need an account or a payment for Nurikabe?

Keep this in mind: No player account or payment is needed. Game scores are recreational results, not cash prizes.