Slitherlink Loop Logic

Slitherlink (Loop Logic) is a classic Japanese logic puzzle. Draw a single closed loop around the grid that satisfies every clue — using nothing but deduction.

The rules are simple, the puzzles are deep:
• The numbers tell you how many of their four surrounding edges are part of the loop.
• Connect dots with edges to form one single, continuous loop.
• The loop never crosses or branches.
• A 0 means no edges touch that cell; a 3 means three of its four edges do.

WHY YOU'LL LOVE IT
• Hundreds of puzzles with one guaranteed solution — no guessing, pure logic.
• A smooth difficulty curve across five tiers, from easy to expert.
• Difficulty mode: pick your own challenge and grid size.
• Daily puzzle: a fresh challenge every day, plus replay yesterday's.
• Build a streak and earn milestone rewards.
• Achievements to chase and stars to collect.

DESIGNED TO RELAX
• Clean, modern board — tap an edge to cycle line, cross, or empty.
• Smart soft hints: wrong numbers and over-filled corners glow so you can self-correct for free.
• Pinch to zoom and pan on bigger grids.
• Color palettes for every taste, including a colorblind-friendly option.
• A Check button and helpful hints when you're stuck.

PLAY ANYWHERE
• Fully playable offline — no internet required.
• Progress saved automatically, even mid-puzzle. No account, no sign-up.

A logic puzzle by Wisera Games.