THE PLAYBOOK · 5438GAME
Learn the rules of Nurikabe
Read the aim of Nurikabe, then make your first move. 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. Check the rule that explains your first action. Use the example below to understand a decision.
Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
One thing to notice as you play
Read one step at a time and try it on the playing area. Match the instruction to the control you use. Notice the feedback after each input.
Your goal
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. Check the rules when you are unsure.
The steps to play
- 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.
Choosing and moving on screen
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. Use one clear input at a time.
Try this example
An island labelled 1 is already complete, so its edge neighbours must be sea. Compare this with the rule that governs the move. Choose a deliberate next step.
A common point of confusion
Two numbered islands may not merge into one. Read the feedback to see why an action did not have the expected result. 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.
Read these answers for extra help
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.
When I return, 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.
Before I begin, what example helps explain Nurikabe?
For clarity: An island labelled 1 is already complete, so its edge neighbours must be sea.
For a quick reminder, what should I watch out for in Nurikabe?
Keep this in mind: Two numbered islands may not merge into one.
Before I begin, what format does Nurikabe offer?
For clarity: Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
For my first round, 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.
