A lot of these "adaptations" take the name, the cachet, and a handful of the character names and throw them into a blender. Like World War Z. The screenwriter

A lot of these "adaptations" take the name, the cachet, and a handful of the character names and throw them into a blender. Like World War Z. The screenwriter perhaps looked at the title of the book for inspiration, but that much could be coincidental based on the movie. The problem is that a movie's fundamentally different as a storytelling method. You can't give the same insight into a person's mind. You can't reveal things about a character or situation that are intrinsically visual by describing them later on. Film is visual, it needs to show, but it's also not engaging in the same way a game is. You can give people a taste of surviving in the wilderness, on a far-flung planet, at the bottom of the ocean in a film, but these films are at best a few hours long. A game can take forty or more hours to complete and you're that much more immersed in the world. To replicate that experience in a two hour movie is impossible.