Purpose Of Title Sequence

The purpose of a title sequence is to give background information to the film and helps the audience understand the characters and their story so far. It gives the audience something to see, so they feel up-to-date and know the brief background of the characters.

Also the Title sequences set the theme, pace and genre of the story. The reason the audience needs to know this is because they  know what pace the film is going to be and whether they will be interested in the film. If they do not know the setting, they will not know what to expect, and even though you don't want them to expect anything,  you want them to have an interest.

Within a title sequence there is always an enigma that the audience questions, and this gets their attraction and ties them into the film. By creating an enigma, it makes the audience question what is happening and try to guess the storyline, and most of the time it is something unpredictable which makes the audience satisfied because it is entertaining.