Game guide · YALONGJS
Lights Out: how a round works
Read the aim of Lights Out, then make your first move. 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.
Something to practise
When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round. Make the next step deliberately.
What you need to achieve
Turn every light off. Every supplied starting state is made by valid flips from an all-off board and is therefore solvable. Use the instructions to see which actions move you towards it. Keep the controls in easy reach.
The playing sequence
- Select a light or an unlit tile.
- The selected tile and its orthogonal neighbours switch state.
- Plan flips so that previously cleared rows stay cleared.
- Use Undo to try another approach.
How to interact with the game
Use the on-screen controls with a mouse or touch. Use the control method described here for this activity. Contact us with the game and device if a control does not respond.
Work through an example
Tapping the centre changes five cells. Tapping a corner changes three. Diagonal neighbours are not affected. Focus on why the action is allowed, not only its outcome. Check the stated objective.
Check this before moving on
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. Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention.
More answers before you play
For a quick reminder, what is the goal of Lights Out?
The key detail is this: Turn every light off. Every supplied starting state is made by valid flips from an all-off board and is therefore solvable.
For my first round, how do I control Lights Out?
Keep this in mind: Use the on-screen controls with a mouse or touch.
Before I begin, what example helps explain Lights Out?
The key detail is this: Tapping the centre changes five cells. Tapping a corner changes three. Diagonal neighbours are not affected.
When I return, 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.
When I return, 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.
Which play mode does Lights Out use?
For clarity: 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?
Here is the relevant explanation: Select a light or an unlit tile.
While reading the Guide, do I need an account or a payment for Lights Out?
No player account or payment is needed. Game scores are recreational results, not cash prizes.
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.
For this browser game, how do I report an issue with Lights Out?
Here is the relevant explanation: 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.