Logic · LIGHTS
Cross Lights
Toggle the chosen light and its orthogonal neighbours.
Toggle the chosen light and its orthogonal neighbours.
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PLAYFIELD FIELD NOTES
A clean logic board for learning how one move changes a neighbourhood.
Cross Lights uses the familiar Lights Out idea but keeps the explanation close to the board: a move changes the chosen cell and its orthogonal neighbours. Scrambles come from legal moves, so the puzzle always has a route back to all-off.
A first logic round or a calm way to practise planning several moves ahead.
Do not chase the brightest-looking cell. Work from the row and column pattern created by the previous move.
Keyboard focus, touch cells, undo, check, hint, and a documented restart state are part of the original engine contract.
First-party note: this game is authored in the Playfield codebase, runs locally, and does not load a provider game binary.