Nurikabe is a logic puzzle with very simple rules but is rich in various solving strategies. If you love japanese logic puzzles, you should definitely try Nurikabe!
The current version of application has four levels of difficulty (Easy, Normal, Medium, Hard) with total over 1000 unique puzzles, completely for free. Each puzzle is solvable and has only one logic solution. Application automatically saves game state, so you can finish the started puzzle any time.

Nurikabe has only three simple rules:

- Each numbered cell is an island cell, the number in it is the number of cells in that island.
- Each island must contain exactly one numbered cell.
- There must be only one sea, which is not allowed to contain "pools", i.e. 2x2 areas of dark cells.