What is a thriller?

A thriller is a genre of film, it involves a lot of suspense and tension. Thrillers revolve around anticipation and suspense. The aim for Thrillers is to keep the audience alert and on the edge of their seats

There's also many types of thriller films, other wise known as sub genres, such as:

• Action thriller- will often have continuous motion and action including physical stunts, chases, fights, battles, and races.
• Crime thriller- usually centers on a serial killer, murderer, robbery, or manhunt.
• Film-noir- is characterized by a black-and-white style with stark lighting effects. The main character is usually a cynical hero
• Sci-fi thriller- will explore the “future-gone-bad” theme, including plots that revolve around alien invasions, extra terrestrial scenarios, and super-diseases.
• Psychological thriller-  is a fictional thriller story which emphasizes the psychology of its characters and their unstable emotional states.
• Religious thriller- include supernatural experiences not pertaining to a certain religion. Exorcisms, demon possession, and church cover-ups are typical themes

 Thrillers usually involve a sudden plot twist which is one of the features that keeps viewers on the edge of their seats, they also generally have a typical use of red herrings which keeps people watching. 

Some specific examples of some thrillers I like are The Devil Inside, The Purge and Frozen.

The Devil inside is a religious thriller and is primarily based on the aspect of demonic posession.

The purge is more of an action/ crime thriller, i like it because the story line is really interesting and the whole concept of the film makes me think.

Finally frozen is more of a psychological thriller, the film is built on tension, its slow placed but the film itself is really good.