Angry Birds Space demo by NASA is an example of using successful iPhone games to encourage learning about science, space, and physics (and probably an alternative revenue source for a government agency struggling for survival… but that’s not the point). Like learning from stories, learning through games is something kids do naturally. A single iPhone game is not enough for gamification of learning, though, it still requires engagement – by parents, by teachers, and by other children.
You can try Angry Birds Space here:
Just to be clear, these are affiliate links. This means that if you click through them, it is possible that I may earn a (piddly) commission. Of course, if you want, you could just go through the iTunes store directly.