It's a fun game, I just have some suggestions ( 1.)can you guys add more heroes like water mage with a tsunami skills or other skills, earth mage with a skill that can throw large stone to enemy, robot heroes with a lazer power, a hero with machine gun, or a heroes that is or can summon an alien or a baby dragon etc. or any kind of heroes and skills..haha .( 2.)but of course adding also new enemy like aliens or other kinds of monster is better. ( 3.) Adding some new defense tower also is nice