Slitherlink vs Loopnest

Slitherlink, the classic logic puzzle — drawn like pen on paper. The rules are simple. Each number counts the lines surrounding its cell. Satisfy every number while drawing one single closed loop — no branches, no crossings — and the puzzle is complete. It looks easy, and then the logic gets delicious. Every puzzle has exactly one solution. Guessing is never required: every generated puzzle is mathematically verified to have a unique answer. Difficulty names mean something here, too — we measure the depth of reasoning each puzzle actually needs, and only serve ones that earn their label. ■ Features • New to Slitherlink? A hands-on tutorial teaches the rules on a tiny practice board • Four difficulties — from Easy 5×5 to Expert 12×12 • Daily Puzzle — the same board for everyone each day, with an attendance calendar and streaks • Paper-quiet design — an ink-and-paper ledger look, in light and dark • Comfortable controls — tap to draw, long-press to mark ×, drag along the dots • Room for big boards — pinch to zoom, two-finger pan, iPad and Apple Pencil support • Mistake-proof — unlimited undo/redo and automatic saving • Track your progress — best and average times per difficulty For the moments you want quiet focus, one board of Slitherlink is enough.

Simple rules. Thoughtful puzzles. One complete loop. In Slitherlink, each number tells you how many lines surround its cell. Draw lines between dots to satisfy every clue and form one closed loop. Lines must not branch, cross, or form separate loops. • 600 free puzzles • Three board sizes: 5×5, 6×6, and 7×7 • Illustrated rules and controls • A daily pick from the free collection • Hints, undo, and redo • X marks to rule out edges • Automatically saved progress • Zoom and pan controls • Three color themes Premium Puzzle Pack Unlock 2,400 additional puzzles with a one-time in-app purchase, including 800 puzzles for each board size. This is a non-consumable purchase, not an auto-renewing subscription. Take your time, follow the clues, and complete the loop.