Little Circuit

Turn every light off in a free 5×5 Lights Out puzzle. Each tap flips one light and its four neighbors; every generated circuit is solvable.

Solve a 5×5 switching puzzle by turning every light off. Pressing a tile toggles that light plus its direct neighbors above, below, left and right, so one move can fix one row while changing the next. Each circuit is generated by applying valid moves to a solved board, which guarantees a way back to darkness. There is no timer or move limit. Restart the same layout at any time, or clear it to unlock the next fresh circuit.

By Goblin Originals

How to play

Click / tap

Start a circuit, then tap or click any light in the 5×5 grid. That light and its direct neighbors above, below, left and right switch on or off.

Turn every light off at the same time to complete the puzzle. The move counter increases after each switch.

Choose Next circuit after a clear for a new guaranteed-solvable layout, or use Restart to reset the current layout and move count.

Tips

Work from the top down: if a light remains on in one row, pressing the tile directly below it is the only later move that can switch it off.

Pressing the same tile twice cancels both presses, so a solution never needs the same tile more than once.

Corners affect three lights and edges affect four. Use their smaller footprints when you are planning the last few switches.

Is every Little Circuit puzzle solvable?

Yes. Each 5×5 layout is made by applying a set of valid switches to an all-off board. Reversing an appropriate set of those switches returns the board to all off.

Is there a timer or move limit?

No. The game counts your moves but does not impose a countdown or maximum. Restart resets the same circuit and its counter.

Can I play with a keyboard?

Yes. Use Tab or the arrow keys to move focus between tiles, then Enter or Space to switch the focused light. Touch and mouse input work too, with no account or download.

Free to play in your browser. No download or account required. Enable JavaScript to play.

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