THE PLAYBOOK · TNETUNII
Nurikabe: what to know before playing
Start Nurikabe by looking at the playing area and its controls. 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. Make your first input carefully and watch the result. Use the example below to understand a decision.
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. Notice the feedback after each input.
Aim for this result
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. Try to explain the aim in your own words.
How a round unfolds
- 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 your actions work
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.
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. Keep the game’s format in mind.
Keep this in mind
Two numbered islands may not merge into one. Take a moment to reassess the position before continuing. Read one step at a time and try it on the playing area. Match the instruction to the control you use.
Helpful answers for players
For this browser game, what is the goal of Nurikabe?
Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.
For my first round, 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.
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.
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.
As a new player, what format does Nurikabe offer?
The key detail is this: Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
For my first round, which play mode does Nurikabe use?
The key detail is this: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.