Zombie Friends is Castle Defense Game. This game is episode 1 of Zombie Game Series.Features:- 26 different kinds of Weapons ( 10 Thrown Type, 10 Gun Type, 4 Special Type ) - 31 different kinds of Zombies ( 21 Underground Units, 5 Air Units, 5 Boss Units )- Various Upgrade Systems- All 50 levels of Campaign Mode ( 3 type of Difficulty )This game is simple and enjoyable.