Welcome to another dimension A ‘Twilight Zone’-themed mini-golf course has opened inside the hotel-casino. The 18 holes are an homage to various ‘Twilight Zone’ episodes and characters The company operating the course, Monster Mini Golf, opened a Kiss-themed course in May 2016 at the Rio. The course is open every day, 10 a.m. to midnight, and costs $11.95 to play.