I just happened upon a website that listed several fun ways to increase your typing speed.
One of the games listed is called
QWERTY WARRIORS.
It is a first person shooter game where you have to type the word listed underneath the enemy character on the screen as
FAST and
CORRECTLY as possible to get your weapon from your character to fire in time to destroy various enemy threats that surround you in an ever increasing manner. It starts out with common three letter words and a few enemy threats and then as you show accuracy and speed, it will increase the amount of enemy threats and the word length accordingly so that you will need to type even faster in order to get your weapon to fire in time to destroy all enemy threats... good practice for speed typing practice of individual words - and fun if you like 1st person shooter games and hearing things blow up.
see:
http://cognitivelabs.com/word_shoot.htm