If they had a game like this in typing class, I would have stayed awake. The Typing of the Dead is considered more of a mod or remake because of how closely it is to House of the Dead 2. The game plays just like the first-person rail shooter where your mission is to take out zombies, but instead of a gun, you use your keyboard.
No, seriously, each zombie or monster has a word and you must type out the word fast enough to kill it. How does it know you typed the word or if you spelled it right? I think those questions asked means you are sympathetic to the zombie cause so shut up and play!
As far as bosses, you will have to type out answers to questions and for the final boss there are alternate endings if you type out different answers. I think we need a season of The Walking Dead that covers this.