There is a new iOS game called Scribblenauts Remix, this game is adopted from NDS game Scribblenauts, featuring a kid called Maxwell who can create any object just by writing on a magical book he has.
Fun! Yeah, I can create anything I ever imagine about, from vampire, scientist, god, even Isis! They are all packed into a words game like this. Even though, this game is kinda kiddy, I suggest this game for kids age range 8 to 15, it may eventually help children to learn new words and develope their imagination.