Thirteen was the first coaster with Vertical Drop Track, a feature where the train and the track drop together. As of 2017, four other coasters
have Vertical Drop Track:
- Polar X-plorer at Legoland Billund in Denmark. Built in 2012 by Zierer.
- Verbolten at Busch Gardens Williamsburg in Virginia. Built in 2012 by Zierer.
(Pictures coming soon)
- Wonder Mountain's Guardian at Canada's Wonderland
in Ontario, Canada. Built in 2014 by ART Engineering GmbH. (Pictures coming soon)
- Darkmare at Cinecittà World in Italy. Built in 2014 by Intamin.
©2017 Joel A. Rogers.