Game guide · JYDEJI
Nurikabe: rules and examples
Open Nurikabe, check the instructions and begin a round. 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.
A small practice goal
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. Make the next step deliberately.
What you are aiming for
Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Use the instructions to see which actions move you towards it. Start with a deliberate move.
Step by step
- 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 use the controls
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. On a smaller screen, keep the active part of the board within view. Look at the feedback after the action.
See how the rules apply
An island labelled 1 is already complete, so its edge neighbours must be sea. Compare this with the rule that governs the move. Look for the relevant detail.
A mistake to avoid
Two numbered islands may not merge into one. Take a moment to reassess the position before continuing. Compare the worked example with your own position. Use the reasoning, not an answer copied from a different board.
Common questions
For this browser game, what is the goal of Nurikabe?
The key detail is this: Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.
While learning, how do I control Nurikabe?
For clarity: Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.
What example helps explain Nurikabe?
The key detail is this: 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?
Here is the relevant explanation: Two numbered islands may not merge into one.
When I return, what format does Nurikabe offer?
For clarity: Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
As a new player, 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.
When I return, where should I start with Nurikabe?
The key detail is this: Shade sea squares and leave islands white.
While learning, 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.
While reading the Guide, 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.