Film adaptations definitely ruin the book. It alters your mental picture of the characters and setting. Also, most of the time, they change the sequence of events. Ready Player One is one of my favorite books of all time. However, I honestly didn't like the film because most of the important scenes were omitted. To give an instance, the scene where Wade Watts got jailed and hacked through the system to get Sorrento's vital files was omitted.