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Fireflies

Every tap flips a light and the four lights touching it. Work out the order and dim every firefly on the pond.

Taps0
Lit0
Time0:00

How to play

  1. Tap any light. It flips on or off, and so do the lights directly above, below, left and right of it.
  2. Plan your taps so that, one by one, every light goes dark.
  3. The order you tap in is up to you — tapping the same light twice undoes it.
  4. Each grid is built from real taps, so a solution always exists. Clear them all to win.