In the 21st century, it is a huge advantage if you know how to touch type. Each time you use a computer, iPad, notebook, tablet or android - it will be a lot easier and quicker if you don't have to keep looking at the keyboard as you type. Have fun playing some of these games and improve your typing skills at the same time.
Sense~Lang.org
This is a series of lessons where you have fun and learn to touch type
Memory-Improvement-Tips is a great website with a huge variety of typing games to play.