Game guide · 20ZL
Lights Out: a guide for your next round
Make Lights Out your next activity in the game library. 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. Treat the first round as a chance to learn the controls. Look at what changes after your first action.
Practice with a purpose
Read one step at a time and try it on the playing area. Match the instruction to the control you use. Use the example to check your reasoning.
Understand the aim
Turn every light off. Every supplied starting state is made by valid flips from an all-off board and is therefore solvable. Read that aim before choosing your first action. Notice how the game responds to your input.
Start here and follow along
- 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 your actions work
Use the on-screen controls with a mouse or touch. On a smaller screen, keep the active part of the board within view. A new-round button replaces the current round.
An example to follow
Tapping the centre changes five cells. Tapping a corner changes three. Diagonal neighbours are not affected. Apply the same reasoning to the position in your own round. Consider the next action carefully.
Check this before moving on
An unlit tile can still be tapped; it may be necessary to solve the board. Compare the situation with the worked example. Before your first action, say what you are trying to achieve. Then compare the result with the goal.
More answers before you play
On this playing page, what is the goal of Lights Out?
Turn every light off. Every supplied starting state is made by valid flips from an all-off board and is therefore solvable.
While reading the Guide, how do I control Lights Out?
For clarity: Use the on-screen controls with a mouse or touch.
While reading the Guide, what example helps explain Lights Out?
Here is the relevant explanation: Tapping the centre changes five cells. Tapping a corner changes three. Diagonal neighbours are not affected.
For a quick reminder, 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.
For my first round, what format does Lights Out offer?
For clarity: Play using the solo mode shown on this page. Read the controls before starting a new round.
For this browser game, which play mode does Lights Out use?
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?
Select a light or an unlit tile.
For this browser game, do I need an account or a payment for Lights Out?
Keep this in mind: No player account or payment is needed. Game scores are recreational results, not cash prizes.
How can I find Lights Out again?
The key detail is this: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the 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.