Game guide · JK-TJ
Understand the basics of Nurikabe
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. 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
When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round. Use the example to check your reasoning.
Aim for this result
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. Follow this game’s rules rather than another version’s.
Work through the instructions
- 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.
How to interact with the game
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. Read a button’s label before selecting it. Avoid pressing the same control repeatedly while a move is being processed.
Follow the example
An island labelled 1 is already complete, so its edge neighbours must be sea. Compare this with the rule that governs the move. Notice the change in the playing area.
Pay attention to this rule
Two numbered islands may not merge into one. Read the feedback to see why an action did not have the expected result. After a move, check what changed. Decide which rule explains the new state before acting again.
Game-specific help
When I return, what is the goal of Nurikabe?
Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.
How do I control Nurikabe?
The key detail is this: Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.
Before I begin, what example helps explain Nurikabe?
Here is the relevant explanation: An island labelled 1 is already complete, so its edge neighbours must be sea.
As a new player, what should I watch out for in Nurikabe?
Here is the relevant explanation: Two numbered islands may not merge into one.
For my first round, what format does Nurikabe offer?
Keep this in mind: Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
For this browser game, which play mode does Nurikabe use?
Here is the relevant explanation: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.
When I return, where should I start with Nurikabe?
Keep this in mind: Shade sea squares and leave islands white.
For this browser game, do I need an account or a payment for Nurikabe?
The key detail is this: No player account or payment is needed. Game scores are recreational results, not cash prizes.
For my first round, how can I find Nurikabe again?
For clarity: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.
On this playing page, how do I report an issue with Nurikabe?
Here is the relevant explanation: 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.