Kevin Costner's latest film, 'Horizon: An American Saga', which he has been developing for over 30 years, has faced significant backlash following its disappointing box office performance of $33 million against a $50 million budget. Although many refer to it as a 'passion project', Costner himself finds that label diminishes the film's significance, stating that he has put his heart into all his work. Despite poor initial reviews and the cancellation of its planned sequel, he believes that the film's true success will be measured by its long-term appeal rather than immediate box office numbers. The film's historical context and Costner's personal investment have been highlighted, with the actor emphasizing the importance of storytelling rooted in America's legacy. Although 'Horizon' has not performed well in theaters, it may find a second life through Video On Demand services. Ultimately, Costner's dedication to the project reflects his belief in its value beyond initial reception.