very good game, still a little to fast paced for me, when i wait mana for building a tower or to combine 2 gems i forget to make a wave come sooner so i get glowing frame and so on :(
i might add other sugestions - quest lists - they give u 4..5 quests with difficulty and payment to choose from, more quest types like fighting against a man eating wolf or bear, defend a village against sum rufians, what Kitana said made me think what not upgrade troops with equipment to, when a soldier makes sum level he could wear other stuff and be made sumthing stronger