BulkyPix recently released a puzzler like no other called Cardboard Castle. This game will entertain you and your kids for hours.
In this game you are a Knight trying to save a princess (how original… lol). You will have to go through multiple levels and traverse them from left to right. To do so you will have to interact with objects in the scene. All the elements in the scenes are made of cardboard.
For example you might come across a pair of scissors and a tree. If you drag the scissors on the tree it will turn into planks of wood. If you then drag these planks over a gap that was preventing the hero to reach the other end it will turn into a bridge.

The game is rich in surprises and is not as easy as it may seem at first sight.
The graphics are really well done and definitely give the impression of cardboard cutouts.

The iPhone version is only $0.99 and the iPad version is $2.59 (not sure if it’s worth it)

You probably already guessed it but this is a definite THUMBS UP  d(^_^)b