They say that a Hulk movie would be tricky, but they have all the fuel they need for the best Hulk storyline ever written. Planet Hulk. I agree its hard to make a movie where he is a bonified stand alone superhero, but we are talking about a Planet where survival and battle is key. It puts the Hulk exactly where he thrives. A world where only the strong survive. And we all know Hulk is the strongest there is.