KJ Designs have created a really engaging educational game for kids. The idea of the game is to teach children who live in Guam to learn their local language, which is Chamorro.
The way the game works is really quite neat. And even if you don't speak Chamorro it's still well worth playing just to see the method used. I now know the Chamorro animal names for rabbit, pig and monkey off by heart :)
The game is available for Android phones, but a web version is linked in this forum thread too.