Slither Link

Slither Link is a logic puzzle played on a grid of dots with numbers in some of its cells. You use the numbers as clues to connect adjacent dots with straight lines, forming a closed loop. A number indicates how many edges of its cell belong to the loop; cells without numbers have no stated edge count. The line must not cross or branch, and the rules prohibit more than two closed loops.

Levels and boards

The game includes 300+N levels across six board sizes, with a choice of color themes. A level generator can create puzzles in all six sizes and three difficulty levels, allowing you to play an infinite number of generated levels.

Puzzle tools

The automatic cross feature uses lines you have placed and simple logic to mark deductions, helping you progress faster. It is an aid rather than a solution, and is disabled for levels 1–50 on the 3x3 board. Hold the Pencil button for two seconds to turn all temporary lines into regular lines. Hold Undo for two seconds to undo back to the area of the most recent temporary line.