There are several sub-genres within the thriller genre that filmmakers use to develop their films. These include action thrillers, which feature protagonists confronting dangers and obstacles through action; conspiracy thrillers, where heroes confront powerful enemies; crime thrillers, focusing on criminal activities like murders and heists; horror thrillers, blending horror and suspense; and psychological thrillers, where the conflict is mental rather than physical. Examples are given for each sub-genre.