The Nest is one of the Physics Games that you can play on maths4kid.com for free. Help the birds to the nest. Destroy all PIG by making it a collision with Ground, Saw Obstacle, outside layout. Tap the BIRD/PIG to transform them. Tap the Green Block/Stick to remove it. The Stone (Grey block/Stick) can not remove. Tap as Little as possible to get three stars!