If you want, there are games out there specifically made for the improvement of typing while being entertainment.
The Typing of the Dead which is a play on House of the Dead.
Initial D typing which is a play on the anime show about mountain pass racing in Japan.
These are just two examples, there are many more 'Edutainment' games out there. I guess people take typing as a given today with the prevalence of cellphone texting with kids. They probably have something for Ipads. /shrug