
SlitherLink is a kind of mathematical intelligence game, which consists of a checkerboard and a number in the checkerboard. When solving the problem, you must use the clues provided by the numbers to connect an uninterrupted closed loop on the checkerboard line.

The tutorial(1-2 level in 3x3) has finished

5 levels has finished.

10 levels has finished.

25 levels has finished.

50 levels has finished.

100 levels has finished.

150 levels has finished.

200 levels has finished.