what is the name of this iphone game?

[Sana]

I used to play it all the time on my dads iphone. Then he got divorced with my mom. I finally got an iphone and I want to know the name. It was this guy who has a book of death or something and there were zombies going after the book. You had to defend it with peasants, horse men, and other guys. There was a cool down time before you buy another person. The cool down time was longer depending on how powerful the person was. Oh and there also was a castle. Ummmm very violent. And if you lost a guy would scream THEY GOT THE BOOK! and yeah

[Shadow]

Army of Darkness