Suggestions for a childrens point and click adventure game?

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http://ubuntuforums.org – I've just finished playing Machinarium and my six year old really enjoyed trying out some of the levels. It's a bit dark for what I want her doing though and there was some content I don't want her to see, such as characters smoking and some aggression between characters. The beauty of it is that there was no text to read, unlike say Out Of Order, which has the overall feel I'm looking for. Any suggestions for something very simple that a six year old child could enjoy? (Hardware)