Slitherlink Mastery

Camilo Fitzgerald

In-app purchases

About this game

Slitherlink Mastery is an addictive logic puzzle game. We have been addicted to these puzzles for over 10 years now and decided it's about time to release an app of our own. Enjoy!

FEATURES
• 4 difficulty levels: Easy, Medium, Hard and Master
• 5 puzzle sizes: 3x3, 7x7, 10x10, 15x15 and 20x20
• 3 types of puzzles: Triangle, Square, Hex
• Over 10,000 randomly selected puzzles
• 6+ themes to suite your mood and taste
• Touch-screen pan and zooming
• Line colouring for long chains
• Double tap to mark empty spaces
• Undo, redo, reset and replay buttons
• Instant error indications
• Stats and high scores system

A 'master' difficulty can be unlocked with an in-app-purchase for the most hardcore of puzzle solvers. If you're enjoying Slitherlink Mastery you can support us by unlocking this mode.

Enjoy!

Ratings and reviews

Great game with a few quality of life improvement possibilities: 1. A border on the outside would be nice. A couple times I was zoomed in and thought the edge was in the wing place and made some mistakes as a result. 2. Some other way to add an x. Double tapping tiny lines is super annoying. Cycling maybe, or even buttons at the mission choosing what item you are trying to place would be much better for me at least. 3. Finally (and this one is most important) some way to color in squares not would be amazing. It is actually a really useful thing to be able to mark whether you know a given square is"inside" or "outside". Beyond that the graphics and sound are fantastic, and the UI is nice and clean. Thanks for making such a great free app! If you implemented suggestion 3, I would up this to 5 stars and if you did 1 and 2, I would purchase pro mode (I'd gladly pay twice as much or more)

The best Slitherlink app I've found so far. Great selection of puzzles, lots of options, and really nice graphics.

Love the simplicity of this game and find it very addictive. The different levels of difficulty allow you to keep challenging yourself as you get better. I like the design over all but have a couple of suggestions for improvements. Firstly, I suggest putting a border or darker line around the outside of the grid. I find that when playing zoomed in it is a little annoying to not be able to quickly distinguish where the grid ends without moving it around. A simple border would make game play a lot better in this regard. Secondly, I dislike the fast double tap to eliminate a section of the grid. I feel it would be better to simply cycle through a line, a cross or nothing just with the number of times you tap on that section.

What’s new

Slitherlink Mastery is Back! Remastered for 2026!