Philosopher's stone
Beginning in April 2014 and spanning into August, Kjellberg, along with his then-girlfriend Marzia, began a marketing campaign for the Legendary Pictures film "As Above, So Below". Kjellberg's videos for the marketing campaign included a miniseries featuring him participating in the "Catacombs Challenge". The challenge involved Kjellberg searching for three keys in the catacombs to open a container holding "the Philosopher's stone". The couple's videos were able to earn nearly 20 million views. Maker Studios, which both Kjellberg and Marzia were represented by, brokered the ad deal between the two and Legendary Pictures. In January 2015, Mountain Dew partnered with Kjellberg to launch a fan fiction contest, in which winning fan fiction will be animated into video formats and then uploaded onto his channel.