142.Through the Roof

Locked in the game until the expansion is purchased. Then chapters 6–20 open, with all 150 of their levels.

Goal: Light the yellow bulb.

In the grey stone at the lower left, a steel ball rests on a plank in a small pit. At the top right a bulb waits on a tiny shelf beside a long grey corridor. Light the yellow bulb.

In your toolbox

• Tube ×2
• Timer (red) ×1
• Lift ×1
• Slow Relay (red>blue) ×1
• Piston (blue) ×1
• Warp Gates ×1
• Lever Switch (red) ×1
• Relay (red>blue) ×1
• Plank ×1

We never post solutions. Stuck? Tap the light bulb in the game for a hint.