Light Up – Place Bulbs to Light up the Squares – Puzzle Game

Light Up


In Light Up, you are presented with a grid of squares. Some are filled in black; some of the black squares are numbered. Your aim is to ‘light up’ all the empty squares by placing light bulbs in some of them.

Each light bulb illuminates the square it is on, plus all squares in line with it horizontally or vertically unless a black square is blocking the way.

Game modes:

  • 7×7 – Easy
  • 7×7 – Tricky
  • 7×7 – Hard
  • 10×10 – Easy
  • 10×10 – Tricky
  • 10×10 – Hard
  • 14×14 – Easy
  • 14×14 – Tricky
  • 14×14 – Hard
  • Custom mode

This puzzle was invented by Nikoli, a Japanese publisher that specializes in games and, particularly, logic puzzles.

Below is a short tutorial showing you how to download and compile the latest source code for this game, and the other 38 games in the puzzle collection. The tutorial takes place in Linux, using the Ubuntu 17.10 distribution, but the procedure will be the same, or very similar, for other Linux distributions. If you find the tutorial helpful, please give the video a like and subscribe to our YouTube channel.

Besides the main 3 operating system, the puzzle collection has also been ported by contributors to Palm, Android, Symbian 60, iPhone, iPad, and the Windows Store.

Developer: Simon Tatham, Richard Boulton, James Harvey, Mike Pinna, Jonas Kölker, Dariusz Olszewski, Michael Schierl, Lambros Lambrou, Bernd Schmidt, Steffen Bauer, Lennard Sprong, and Rogier Goossens
License: MIT
Written in: C, Java, JavaScript

Back to the Puzzle Collection