The teaser trailer of a film can often be the most intriguing version of a movie. much like the intro of a horror movie, a teaser trailer's primary job is to make a strong impression. Introduce the dominant themes, show off some impressive visuals, and share a small peek at the plot. It rarely serves as a fully reliable representation of the final product (also like horror intros), but there are many who serve as an intriguing experience on its own.
In terms of marketing, teaser trailers often end up being the best, most interesting version of a given film. Since they have a limited runtime and is especially selective with what details it shares, you're far likelier to be drawn in. Unfortunately, since almost all movies can be cut together to fill an engaging two-minute trailer, you can never be sure if a good teaser equates to a quality two-hour experience. These ten films are a great example of how a stellar teaser isn't always representative of what the average audience member will experience.
Now these aren't all necessarily bad or below-passable films, rather just final products that didn't hit anywhere as well as their sharply-edited sneak peek trailers. Whether it was a summer blockbuster or just a movie with a promising premise, these films owe a great deal to their marketing teams.