Slitherlink Puzzle vs Slitherlink+

Slitherlink is a pure logic puzzle where your goal is to draw one single closed loop on a grid of dots. Some cells contain numbers. Each number tells you how many of the four sides around that cell must be part of the loop. Use logic to place fences, mark impossible lines, and complete the board without guesses. The loop must be continuous, closed, and unbroken. It cannot branch, cross itself, or form multiple separate loops. Every solved level has exactly one loop. Features: • 3000 built-in levels • Bonus levels for even more challenges • 6 difficulty levels: Novice, Casual, Standard, Difficult, Advanced, Expert • Optional game timer • Day and night modes • Undo button • Hints when you need help • Save game state and progress • Portrait and landscape support • Helpful note tools: crosses, red area markers, and green area markers • No subscriptions • No in-app purchases How to play: Place fences between neighboring dots to build the final loop. A numbered cell must have exactly that many fences around it. For example, 0 means no fences, 1 means one fence, 2 means two fences, and 3 means three fences. You can also place red crosses to mark where fences cannot go. Red and green area markers can be used as notes to help separate regions and follow the logic of the loop. Start with simple clues, use marks to eliminate impossible moves, and avoid closing a small loop too early. The final answer must always be one single closed loop. Whether you want a quick relaxing level or a serious logic challenge, Slitherlink offers thousands of puzzles across multiple difficulty levels with no purchases required.

Slitherlink is a logic puzzle: draw one closed loop through a grid of cells. Each number says how many sides of that cell the loop runs along. Every puzzle has exactly one solution, and you can always find it by reasoning, without guessing. There are absolutely no ads and you can play offline. NOT JUST SQUARES Classic Slitherlink is played on squares. Here they are one grid among many: Honeycomb, Cairo pentagons, Kites, Diagonals, Snowflakes and Penrose tiles, with more on the way. PLAY YOUR WAY Four sizes from small to huge and three difficulties in every grid. Mark your favorites and let the game deal you a random one. UNLIMITED LEVELS Honeycomb is free, forever, and its levels never run out. Every other grid comes with free levels to try, and a single one-time purchase unlocks unlimited levels in it. HELP WITH THINKING Lines and clues color themselves as you progress. Parity shading lets you mark the inside and the outside of the loop, by hand or automatically. Wrong edges can be highlighted. Or switch it all off for the harder pen-and-paper look. SEE HOW YOU DID When you finish, see the median time of everyone who solved that kind of puzzle and where yours stands. Share it if you like, or turn the ranking off for a no-pressure game. --------------- Questions or problems? Please email, and you will get an answer. --------------- Slitherlink is also known as Loopy, Loop the Loop, Fences, Takegaki, Suriza and Dotty Dilemma. If Sudoku has gone stale, this is the next puzzle to learn.