Light Up
Light UpChallenge 1
Tap a bulb to flip it and the bulbs next to it. Turn every bulb on!
🎯 Light every bulb in 1 tap!0 taps
💡 6 of 9 lit
For grown-ups
A grid of bulbs. Tapping one flips it and the bulbs next to it. Turn them all on in as few taps as the goal says. Every challenge has a fewest-taps answer found by the program. It practises thinking about how moves combine.