The first thing I noticed was that the book was being told from Katniss’s perspective, while the movie was told from many different perspectives. Also, in the book the Mocking Jay pin was given to Katniss by Madge before she went to the capital, and then Katniss gave the Mocking Jay pin to Prim. In the movie Katniss got the Mocking Jay pin from the black market, and then gives the Mocking Jay pin to Prim. Another thing I noticed was that Madge, the girl that gave Katniss the Mocking Jay pin, isn’t in the movie.
In the book, Haymitch is drunk at the reaping. In the movie this never even existed. Another big difference in the book is Peeta loses his leg and in the movie he just gets a few gashes but nothing serious. In the book, when Katniss attacks Peeta after his “crush” admission during the interview, he falls into an urn and cuts his hand on the shards. But in the movie Katniss pushes him, but no one is really hurt. In the book, Katniss struggles for a full day before finding water. She asks, out loud, for Haymitch to send her water via a sponsor. He doesn’t, which makes her think she’s close to water and she is, in the movie, she finds the pond right after running away from The Cornucopia. In the book, Rue is speared by a boy from District 1 while still in the net. In the movie Katniss frees Rue from the trap, but then a spear is thrown at her.
In the book, Katniss receives a sleeping potion from Haymitch, which she uses to drug Peeta so she can go get him medicine. In the movie, Katniss doesn’t drug him, but she does wait until he’s asleep to head to The Cornucopia. When the game makers announce in the book, that only one tribute can live (again) Katniss thinks Peeta is trying to kill her so she draws an arrow across her bow and in the movie it doesn’t happen. In the book, Beasts are released into the arena that have the eyes of dead tributes. They walk upright upon on occasion, while in the movie, they are just dog-wolf-like