Game guide · 5AICAKE
The Nurikabe playbook
Try Nurikabe at your own pace and keep its objective in view. 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.
Something to practise
Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention. Keep the objective visible.
What the game asks you to do
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. Start with a deliberate move.
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.
Controls
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. Look at the feedback after the action.
Follow the example
An island labelled 1 is already complete, so its edge neighbours must be sea. Use the example as a guide rather than a substitute for reading your board. Check the stated objective.
A mistake to avoid
Two numbered islands may not merge into one. Read the feedback to see why an action did not have the expected result. When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round.
Common questions
While learning, what is the goal of Nurikabe?
For clarity: Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.
How do I control Nurikabe?
Keep this in mind: Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.
While learning, what example helps explain Nurikabe?
The key detail is this: An island labelled 1 is already complete, so its edge neighbours must be sea.
Before I begin, what should I watch out for in Nurikabe?
For clarity: Two numbered islands may not merge into one.
For a quick reminder, what format does Nurikabe offer?
Here is the relevant explanation: Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
While reading the Guide, 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.
Before I begin, where should I start with Nurikabe?
For clarity: Shade sea squares and leave islands white.
For my first round, do I need an account or a payment for Nurikabe?
Here is the relevant explanation: No player account or payment is needed. Game scores are recreational results, not cash prizes.
On this playing page, how can I find Nurikabe again?
Here is the relevant explanation: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.
For a quick reminder, how do I report an issue with Nurikabe?
The key detail is this: 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.