A fire truck game has been done way less than that of the standard rpg group saving the world/some chick (ala Golden Sun).
Of course older gamers are not gonna like crap like this, but to me this is awsome. It will help keep my cousin (he is 5-6yo) quiet for a couple of hours at least.
I havent tried this game, but then i doubt most of the posters above have though either, so I cant comment exactly on the nature of the game itself.