A list of the most successful summer blockbusters has been compiled, though the specific time frame and criteria for success are unclear. Some outlets are focusing on recent years, such as the last 20 years or since 2010, while others are looking at a broader period, including the last 50 years or as far back as 1980. The summer movie season is also being previewed, with some outlets highlighting upcoming releases and others analyzing the potential for box office success.