This paper describes the development and assessment of a
new evaluation method that encourages young children to
express both usability and fun problems while playing a
computer game. The method combines the traditional
thinking-aloud method with picture cards that children can
put in a box to indicate that there is a problem. An
experiment to assess this method shows that children
indicate more problems in a direct way with the picture
cards than without the picture cards. Children do not just
replace verbalizations by picture cards and most children
prefer to use the picture cards during the test.