Game guide · RCFUTURE11
The essentials of playing Nurikabe
Take a moment with Nurikabe before moving to another game. Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Use the example below to understand a decision. Read the objective before making your first input. Keep the game area visible while you use its controls.
Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
Take a closer look while playing
When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round. Refer to the controls when needed.
What you need to achieve
Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. An attractive position is not enough unless the goal is met. Review the board or playing area as it changes.
Start here and follow along
- 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. Check any mode label before starting.
Put the rules into context
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. Take a moment to compare.
A common point of confusion
Two numbered islands may not merge into one. Compare the situation with the worked example. Choose one rule to keep in mind for this round. Apply it consistently rather than guessing what another version might allow.
Answers about the rules and controls
While reading the Guide, 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.
As a new player, 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?
The key detail is this: An island labelled 1 is already complete, so its edge neighbours must be sea.
While reading the Guide, what should I watch out for in Nurikabe?
Here is the relevant explanation: Two numbered islands may not merge into one.
While learning, what format does Nurikabe offer?
Keep this in mind: 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.
For a quick reminder, where should I start with Nurikabe?
Here is the relevant explanation: Shade sea squares and leave islands white.
While reading the Guide, 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.
Before I begin, how can I find Nurikabe again?
Keep this in mind: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.
For this browser game, 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.