Lights Out
Every press flips a light and its neighbours. Four levels from 3×3 with hints to 7×7 with wrapping edges and a move limit.
Switch every light off.
How to play
- Pressing a light toggles it and its four direct neighbours.
- Par is the number of presses in a computed solution. Every board is built from real presses, so it can always be solved.
- Easy: 3×3 with 3 hints. Hard: classic 5×5 with 1 hint. Extreme: 6×6 with a move limit of twice par. Nightmare: 7×7 with wrapping edges and a limit of par + 2.
- Restart replays the same board; pick a level for a new one.