Video game is a universal language.  All kids do not need to know what the characters on these video games are saying in order to play the games.  Then it stands to reason that best way to get a child to learn something new like a new language is to have them play games online that teach the language.  I found a couple of games online at an esl online forum.  The games are fun and easy to master, but not boring.  The purpose of making them easy to master is to help facilitate a love for learning and cut across the language barrier faster.