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Follow the steps for Lights Out

Give this approach a try

Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention. Keep the objective visible.

The challenge in front of you

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. Try to explain the aim in your own words.

Start here and follow along

  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.

Your inputs

Use the on-screen controls with a mouse or touch. Use the control method described here for this activity. Avoid pressing the same control repeatedly while a move is being processed.

An example before you play

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. Keep the game’s format in mind.

Watch out for this

An unlit tile can still be tapped; it may be necessary to solve the board. Read the feedback to see why an action did not have the expected result. After a move, check what changed. Decide which rule explains the new state before acting again.

A few questions answered

For this browser game, 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.

When I return, how do I control Lights Out?

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

For this browser game, what example helps explain Lights Out?

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

What should I watch out for in Lights Out?

Here is the relevant explanation: An unlit tile can still be tapped; it may be necessary to solve the board.

Before I begin, what format does Lights Out offer?

The key detail is this: Play using the solo mode shown on this page. Read the controls before starting a new round.

When I return, which play mode does Lights Out use?

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

While reading the Guide, where should I start with Lights Out?

Keep this in mind: Select a light or an unlit tile.

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

Here is the relevant explanation: No player account or payment is needed. Game scores are recreational results, not cash prizes.

As a new player, how can I find Lights Out again?

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

For this browser game, how do I report an issue with Lights Out?

For clarity: 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.