Plants vs. Zombies тебе в помощь.  http://ru.wikipedia.org/wiki/%D0%A0%D0%B0%D1%81%D1%82%D0%B5%D0%BD%D0%B8%D1%8F_%D0%BF%D1%80%D0%BE%D1%82%D0%B8%D0%B2_%D0%97%D0%BE%D0%BC%D0%B1%D0%B8