This game is offffff the hoooook. I am an avid gamer and a fan of all td games, i read reviews before purchasing, and im sorry to say , the game is NOT overly dificult, but you DO need to use ur brain. i just beat the game and its faaaaaantastic, and it does hold its own as a td with an origional twist, you CANNOT just build and leave, and still win, you must remain active while playing due to perks the game adds that forces u to " cast spells" durring surtian waves. music and grafix are great and there is plenty of levels, ive never experienced crashing. And as far as if you like tower defence games and enjoy a real challenge.... this one is for u, with the content provided id say its a GREAT 3 dollar investment with a great deal of replay value. Also. For the ones who said flyers come from a different start WTF???? THEY ARE SUPPOSED TO. Get real and figure it out use ur brain and stop giving bad reviews because u fail... All in all. stars total from me, looking forward to future updates and keep the creeps coming!!! Would like to see lvl 4 ninjas and maybe one or 2 others but goood job developer!