Lanternward

Play Lanternward unblocked

Looking for a cozy sudoku puzzle you can play at school? Lanternward loads straight in your browser on Physics Shark: free, unblocked and nothing to install. Play it on a Chromebook or any computer with a keyboard and mouse.

What is Lanternward?

Place lanterns in the night streets of Veldrenmar until every alley is lit.

Lanternward is a logic puzzle in the classic Akari ("Light Up") family: a lantern lights its whole row and column until a rooftop stops it, numbered roofs say how many lanterns stand beside them, and no lantern may shine on another. Every puzzle has exactly one solution and can be solved by reasoning alone. No guessing, ever.

• 300 graded puzzles across 10 districts, 6×6 to 14×14, then Endless Night
• A new daily puzzle every day
• Difficulty measured by the deduction it needs, not by a label
• Four stars by time against each level's target, your best times, never a countdown
• Stuck? A hint places one correct lantern and "Show my mistake" marks the wrong ones. Each costs one star, nothing else
• Colour-blind palette
• Progress is saved in this browser

Free to play. This browser edition shows no ads.

How to play Lanternward

Desktop

Left click a street = place a lantern

Click it again = mark a dot (no lantern here)

Click once more = clear

Hold the button = mark a dot directly

Goal

Light every street. A lantern lights its row and column until a roof stops it. Numbered roofs say how many lanterns stand beside them. No lantern may shine on another. Every puzzle has one solution and needs no guessing. Hint and Show my mistake are under the board and cost one star each.

Lanternward controls

• Left click a street: place a lantern
• Click it again: mark a dot (no lantern here)
• Click once more: clear
• Hold the button: mark a dot directly

Lanternward FAQ

Is Lanternward free to play?

Yes. Lanternward is free on Physics Shark, with nothing to download and no account to make.

Can I play Lanternward unblocked at school?

Lanternward runs in a normal browser tab with no install, so it plays on school Chromebooks and laptops, with nothing to install and no account.

Does Lanternward work on phones and tablets?

It's made for computers: play it with a keyboard and mouse, for example on a Chromebook.