Amazon's 'Melania' got the headlines. A YouTuber got the ticket sales.

Mark "Markiplier" Fischbach asked his 38.2 million fans to help make his movie "Iron Lung" a hit. They did.

Natasha Campos/Getty Images for Mark 'Markiplier' Fischbach

• This weekend there were "Melania" people and there were "Iron Lung" people at the movies.
• Turns out there were a lot more "Iron Lung" people: The movie, made by YouTube star Markiplier, was a big hit.
• Markiplier, who has 38 million YouTube fans, asked them to show up, and they did. Can other YouTubers repeat his success?