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GSAZJC

RULES & PRACTICE

How to Play Lights Out

Play Lights Out ↗

Game guide · GSAZJC

Read before your next round of Lights Out

Take a moment with Lights Out before moving to another game. Turn every light off. Every supplied starting state is made by valid flips from an all-off board and is therefore solvable. Check the relevant rule before repeating a move. Choose a comfortable screen position before beginning. Keep the game area visible while you use its controls.

Build familiarity through play

Locate the buttons and input area before beginning a long round. Use the on-screen labels to avoid an accidental restart. Use the example to check your reasoning.

The purpose of your moves

Turn every light off. Every supplied starting state is made by valid flips from an all-off board and is therefore solvable. Keep that objective in view throughout the round. The example below illustrates a decision.

The steps to play

  1. Select a light or an unlit tile.
  2. The selected tile and its orthogonal neighbours switch state.
  3. Plan flips so that previously cleared rows stay cleared.
  4. Use Undo to try another approach.

Using the playing area

Use the on-screen controls with a mouse or touch. Keep the playing area visible while using these controls. Make sure you are interacting with the game rather than the surrounding page.

Try this example

Tapping the centre changes five cells. Tapping a corner changes three. Diagonal neighbours are not affected. Use the example as a guide rather than a substitute for reading your board. Take a moment to compare.

A common point of confusion

An unlit tile can still be tapped; it may be necessary to solve the board. A different version of the game may use a different rule. Read one step at a time and try it on the playing area. Match the instruction to the control you use.

More answers before you play

On this playing page, what is the goal of Lights Out?

Keep this in mind: Turn every light off. Every supplied starting state is made by valid flips from an all-off board and is therefore solvable.

While learning, how do I control Lights Out?

Here is the relevant explanation: Use the on-screen controls with a mouse or touch.

Before I begin, what example helps explain Lights Out?

For clarity: Tapping the centre changes five cells. Tapping a corner changes three. Diagonal neighbours are not affected.

While learning, what should I watch out for in Lights Out?

Keep this in mind: An unlit tile can still be tapped; it may be necessary to solve the board.

What format does Lights Out offer?

Here is the relevant explanation: Play using the solo mode shown on this page. Read the controls before starting a new round.

For my first round, which play mode does Lights Out use?

The key detail is this: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.

Where should I start with Lights Out?

The key detail is this: Select a light or an unlit tile.

For a quick reminder, do I need an account or a payment for Lights Out?

For clarity: No player account or payment is needed. Game scores are recreational results, not cash prizes.

For a quick reminder, how can I find Lights Out again?

For clarity: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.

On this playing page, how do I report an issue with Lights Out?

Keep this in mind: Use the contact form and include the game name, browser, device and the actions that led to the issue. Do not send passwords or payment details.

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