I reduced the size of the graphic elements by 50% so that the pop-up message (KGamePopupItem) is now in comparison 50% bigger and always good readable.

I had also to removed the icon from the pop-up message because it was not looking good, because the size of the scene (QGraphicsScene) usually differs from the size of the view (QGraphicsView) and the icon is a QPixmap (not scalable). And changing this behaviour would be a huge rework and would also have some drawbacks... so I don't want to change this. I think it's looking nice now. :)

Anyway, this should solve the last point of the reported bug. Thanks!