I can see why some people don't like that brightly coloured, kind of typical Nintendo style of some games, and whilst I'm not going to change any opinions (nor would I try) I personally feel the perceived simplicity to be quite refreshing, a good concentrated burst of something a little bit different without too many distractions. I quite like the pick up and play for a little while aspect too - mainly because I don't have the opportunity to sit down for a good long gaming session much any more.