A brain-teasing puzzle game from the World Puzzle Championships. Place lights in irregular regions — one per region, one per row, one per column, no two adjacent.
Light On is a brain-teasing logic puzzle game inspired by the World Puzzle Championships. Players must place light items in irregular regions on a grid. The rules are simple yet deeply satisfying: exactly one item per row, one per column, one per region, and no two items can be adjacent — including diagonally.
With colorful irregular regions rendered in a beautiful pastel palette, every puzzle is a fresh visual and mental challenge. Progress is saved automatically, so you can pick up right where you left off.
Remember: one item per row, one per column, one per region, and no two items can touch — not even diagonally.
Random difficulty fluctuation with grid sizes ranging from 5x5 to 10x10. There is always a new puzzle waiting.
Unlimited lives, unlimited hints (1/min cooldown), no ads, and access to exclusive skins.
Compete worldwide. Rankings are based on your current level. See how you stack up.
Choose from lantern, crown, bitcoin, cat, pixel art, and more item skins to personalize your game.
Sign in with email, Google, Apple, or even a crypto wallet. Your choice.
Enjoy sound effects and haptic feedback as you solve each puzzle. Toggle them in settings.
Game progress is saved automatically. Come back anytime and pick up where you left off.
Colorful irregular regions with a carefully chosen pastel palette for a beautiful visual experience.