Isleknot Bridge Islands

Isleknot Bridge Islands is a pure bridge-building logic puzzle — also known as Hashiwokakero, or "bridges" — where every numbered island must be connected with exactly the right number of bridges, every bridge runs straight, no two bridges ever cross, and the whole archipelago ends up as one single connected network. No luck, no timers ticking against you unless you want them to, just clean logic across an open sea.

HOW IT WORKS
Every island shows a number: the exact count of bridge-ends that must touch it when the puzzle is solved. Drag from an island toward a neighbour to draw a bridge. Drag the same direction again to add a second parallel bridge — two is the maximum for any pair. Drag once more and the pair clears back to zero. An island glows red while its number isn't met and turns green the instant it is, so you always know where to look. Any two bridges that cross are highlighted immediately until you fix them.

THREE ARCHIPELAGO SIZES
- Small — a handful of islands for a quick, focused solve.
- Medium — a fuller cluster with longer chains and more crossings to avoid.
- Large — the full archipelago challenge for a long, satisfying session.

Every puzzle is generated fresh: a valid, fully connected bridge network is built first, then the island numbers are derived from it, so every archipelago you get is guaranteed solvable.

BUILT-IN TOOLS
- Drag-to-bridge controls with a clear single/double line and a live crossing check.
- Mistake counter that tracks slips without ever ending your game.
- Timer that keeps running quietly in the background.
- Hint button that reveals one correct bridge when you're stuck.
- Live island colouring — red for unmet, green for satisfied — on every island, not just at the end.

FIVE SECTIONS
- New — pick your archipelago size and start, or continue your saved game.
- Play — the island grid itself, with drag controls and live feedback.
- Stats — your win rate, current and best streaks, and best times per size.
- Learn — how bridges, crossings and the two-bridge limit work, plus a "is this arrangement valid?" mini-puzzle to practice the rules.
- Awards — unlockable milestones as you solve more archipelagos.

WHY ISLEKNOT
- Completely offline. No ads, no accounts, no trackers, no network permission at all.
- No sound — feedback is all visual plus a light haptic buzz on bridges, crossings, hints, and wins.
- A calm night-ocean look with sand-toned islands and teal rope bridges, designed for long, focused sessions.
- Your progress and best times are saved locally on your device only.

Whether you know Hashiwokakero by name or you're discovering bridge-island puzzles for the first time, Isleknot gives you a clean, distraction-free archipelago and lets the logic do the rest.