The book is great. Read it.

Rating: 3/10 (22 September 2014)

*Cue* This is more of a rant than a review, but I've seen worse on here. - - -
The book is great. Read it. The movie. . .? Eh, well we're getting to that. The director, producer, and a few of the cast say that the adaptions were going to be to the 'fans liking'. I think not. TO me, although in some strange circumstances is close to impossible, a book-to-movie adaption should be a close to the book as possible. Here they did little to nothing of the sort.
A few examples:
They keep saying, 'three years' instead of 'two years'-- this fact was very much established in the first book and so on. --My opinion- they put it in there to have it be more dramatic. PLEASE never do that again.

Many of the character designs were the unexpected. This one is self-explanatory.

Many of the characters switch their roles.

Example: In a scene from the book which was excluded completely from the movie, a Griever gets into the Glade and scales up the Homestead wall-- in which the ultimate conclusion is-- Alby dies. Gally was supposed to die in that scene. . . But naw. Shuck it. We'll make Alby die (Although, in retrospect, in almost every movie I've scene--the black guy/guys/girl dies first. Although it wasn't that case here, surprisingly...)
And lastly, the camp's design. Sticks and rocks. Yeah. No stone. No concrete. Just sticks. Poles. And rocks. Even the Homestead seems to have suffered, being it is now degraded, from the third little pig's brick house, down to his little brother's; a stick house. Yeah. Sticks.
And the Map Room. Now sticks. Made of STICKS.
And it very clearly says, many times, and I quote, from The Maze Runner book--
"iron door of the Map Room".
Can you put a iron door on a house of sticks? You could, but to no actual success.

- - Conclusion-

Movie sucks.