tinyLoop: Slitherlink Puzzles

Slitherlink, distilled. Three rules to learn, endless depth to master. Stuck? Smart hints reveal the pattern; the hypothesis pencil lets you test without committing.

tinyLoop is a pure logic puzzle: trace a single closed loop through the grid — no crossings, no open ends. Three rules to learn, endless depth to master. No timers, no energy meters, no connection needed — just the quiet satisfaction of deducing the one solution that fits.

If you love sudoku, nonogram or minesweeper, you'll feel at home here.

■ 300+ levels, a smooth difficulty curve Start at 5×5, stretch out at 8×8, go master at 12×12. Every board is generated and verified to have exactly one solution — always solvable by logic, never by guessing. The first 100 levels are free.

■ Daily Challenge A fresh puzzle every day. Build your streak and measure yourself against yesterday's you.

■ Endless library Beyond the campaign, generate brand-new uniquely-solvable puzzles whenever you like.

■ Stuck? Three kinds of help · Smart hints: reveal the logic pattern that cracks the next step — they teach you how to think, not just hand you the answer · Hypothesis pencil: test any edge without committing, leaving no trace behind · Undo / redo: unlimited, so you can experiment freely

■ Loop console Draw and verify at the same time. Constraint progress and rule conflicts update live, so you never reach the end only to discover a mistake.

■ Solve stats Progress, solving efficiency and personal bests — your improvement, made visible.

■ Obsidian themes A dark palette built for long thinking sessions, comfortable in low light.

■ About Pro One-time purchase, unlocked forever: · The 12×12 master tier and all 300+ levels · Infinite puzzle mode (custom M×N grids with live solving) · Replay any past Daily Challenge · Unlimited logic hints and deadlock diagnosis · Smart hints and the hypothesis pencil without limits · Every theme (Black gold / Cyber crimson)

The free version includes the first 100 levels and the Daily Challenge in full. No ads, playable offline, no account required.

Draw your first loop.