Light Up
Place bulbs to illuminate every empty square.
Made by Mindblown
About Light Up
- Kind: Puzzle
- Played 7 times
- Published 2026-11-02
- Mode: single player
- Runs in a web browser, on a phone or a laptop. Free to play.
How to play Light Up
Goal: Light every empty square on the grid using the fewest conflicts by placing bulbs correctly.
Controls
- mouse or touch: place or remove a bulb on a square
- Escape: close the open panel or menu
Your first game
- Look at the grid of empty and black squares
- Tap or click an empty square to place a bulb
- Check that light spreads across the row and column until blocked by a black square
- Keep placing bulbs until every empty square is lit
- Remove a bulb by tapping it again if needed
FAQ
What is Light Up?
Light Up is a single-player grid puzzle game where you place light bulbs on a board made of empty and black squares.
What is the goal of the puzzle?
The goal is to place light bulbs so that every empty square is lit and no two bulbs shine on each other.
How does light spread across the grid?
Each bulb lights up its entire row and column until the light reaches a black square or the edge of the board.
How do you control the game?
Click or tap a square to place or remove a light bulb. Press Escape to close an open menu or panel.