Aglow: Light Switch Puzzle

Aglow is a board of lamps, and every one of them should be lit. If you have played a lights-out style toggle grid before, you already know the shape of it.

The catch is in the tap: press a lamp and it flips on or off along with the four lamps around it. So lighting the one you want almost always darkens its neighbours, and the puzzle is never which single lamp to press — it is the order to press them in, chasing the dark ones down until none are left.

YOU CAN NEVER GET STUCK
Every board is built by scrambling a fully lit one, so a way back always exists, and pressing a lamp is always its own undo — tap it again and everything returns. There is no wrong move, no timer, and no lives. Being stuck only ever means you have not found the order yet, so you can put it down and come back to it.

HOW TO PLAY
- Tap any lamp; it and its four neighbours flip
- A lamp on the edge flips fewer — there is no wrap-around
- Light every lamp on the board to finish
- Solve in as few taps as you can for three stars

WHAT YOU GET
- Hundreds of boards, from a gentle 3x3 up to the classic 5x5
- A hint that works out a lamp worth pressing right now, from where you are
- A daily challenge: one board, the same for everyone, every day
- Fourteen colour sets and twelve board designs to unlock as you play
- A level map, to go back and beat your tap count on the ones you brute-forced

PLAYS ANYWHERE, ONLINE OR OFF
Works offline with no wifi. Small download. No account, no sign-up, no personal details asked for. Your progress stays on your own device.

Aglow is free and supported by ads. You start with three hints and can watch an ad by choice to earn more, and coins you earn by playing unlock the colours and boards. There is nothing to buy.