reflections where Mary dwelled. A musical tribute to The Rocky Horror Picture Show was added for the 18th and 19th installments. 2010 marked the 20th installment of the event at the Orlando park. It was titled "Twenty Years of Fear", and it featured Fear as the event's icon. There were eight haunted houses. The event ran 23 nights and admission was $74.99. 2011 (Halloween Horror Nights 21) and 2012 (Halloween Horror Nights 22): eight and seven haunted houses, respectively; 25 nights and 22 nights, respectively; $81.99 and $88.99. "Roaming hordes" replace scare zones and The Walking Dead arrive as the event icon in 2012. In 2011, Universal Studios Singapore began their Halloween Horror Nights event. There was one haunted house, the event ran seven nights, and admission was S$60.00. Universal Studios Singapore Halloween Horror Nights 2 in 2012, ran seven nights, had three haunted houses, with admission at S68.00. By 2015, Singapore's Halloween Horror Nights 5 had grown to four haunted houses, three of which were designed using local Singaporean horror legends and myths. Singapore's Halloween Horror Nights 6, in 2016, featured five haunted houses, ran 16 nights, with admission at S$69.00. In 2012, Universal Studios Japan joined the Halloween Horror Nights franchise with an event themed to the Biohazard video games (known as Resident Evil in other countries). It ran 36 nights, from September 14 through November 11. Tickets were ¥8,400. By 2015, Universal Studios Japan had increased its "Universal Surprise Halloween at Universal Studios Japan" (which includes Halloween Horror Nights) to 59 days, featuring both daytime and nighttime activities. 2013 Florida's Halloween Horror Nights 23 featured a haunted house based on An American Werewolf in London, another based on The Cabin in the Woods, and a third based on Resident Evil, plus five more, for a total of eight. The Walking Dead continued as the event icon and The Rocky Horror Picture Show Tribute returned. It ran 27 nights. Admission was $91.99. Florida's Halloween Horror Nights 24 in 2014 featured eight haunted houses and a return to the use of scare zones, absent since 2012. Universal again made use of licensed properties from others, including The Walking Dead, Alien vs. Predator, From Dusk till Dawn, Halloween, and The Purge. There were two shows, Bill and Ted and the Rocky Horror Tribute. Halloween Horror Nights 25, in 2015 at Universal Studios Florida, brought back Jack the Clown as the