Percy Jackson and the Lightning Thief - 10 differences between the book and the movie

10 differences

1. In the book, Mr Brunner throwed Percy the pen when he was fighting with Mrs Dodds, which is a fury, but in the movie, Mr Brunner handed Percy the pen only after the fury flew out of the window on its own.
2. In the book, Percy found out that he was the son of Poseidon only after the activity "capture the flag" but in the movie, Percy found out that he was the son of Poseidon before the activity.
3. In the book, Clarisse and Ares was mentioned but in the movie, they were not mentioned at all.
4. In the book, Percy was offered a quest to find the lightning bolt but in the movie, Percy left on his own.
5. In the book, Medusa named herself as Aunty Em but in the movie, she did not do that.
6. In the book, Percy fought the Chimera alone but in the movie, Percy fought it with Annabeth and Grover.
7. In the book, Percy, Annabeth and Grover were transported out of the Underworld, but in the movie, Percy, Annabeth and Percy's mother were transported out.
8. In the book, the lightning bolt ended up in Percy's bagpack but in the movie, the lightning bolt was in Luke's shield all the time.
9. In the book, Percy and company were transported out of the Underworld and they took a plane to New York, heading for the Empire State Building, but in the movie, they were transported straight to the Empire State Building.
10. In the book, Percy fought Ares at the Empire State Building but in the movie, Percy fought Luke instead.