Light Up, also called Akari, is a logic puzzle about lighting a room. Place bulbs in the white squares until every one is lit. A bulb shines along its row and column until a black square stops it, no bulb may shine on another, and a number on a black square says how many bulbs touch it. New to it? Start with the rules, which solve one of the game’s own puzzles step by step, or play a small one right here.
Light Up
Topics
- Light Up TechniquesEvery Light Up (Akari) technique on its own page, from lit squares and 0s to what-if, each shown on the same 12×12 puzzle from the game.
Guides
- Light Up for Beginners: Start HereNew to Light Up (Akari)? Follow this path: the rules, your first 7×7, the numbers and their light, six small warm-ups with answers, and when to move up.
- Light Up Rules: How to Play Akari (With Examples)How to play Light Up (Akari): the three rules, how a bulb's light travels, one of the game's 7×7 puzzles solved step by step, and where to start in any grid.
- How to Solve Light Up: 7 Techniques That WorkSeven Light Up (Akari) techniques, from lit squares and 0s to what-if, how often the game's levels need each one, and a 10×10 from the game solved in stages.
- Light Up Tips: 8 Tricks to Solve Akari FasterEight Light Up (Akari) tips, measured on the game's 150 levels: start with the 0s, dot every lit square, work around the numbers, and watch the corners of 3s.
- 6 Light Up Mistakes That Break Your PuzzleStuck on a Light Up (Akari) puzzle, or found a number that won't work? These six mistakes cause most broken grids. How to spot each one, and how to recover.