Insane trademark: Spinning cars on the track
The Joker, Carretera Picacho al Ajusco Km. 1.5, Heroes de Padierna, Tlalpan, Mexico City, Federal District, Mexico; +52 55 5339 3600; 10 a.m.-6 p.m.; ticket price 353 peso ($28)
8. The Smiler (Alton Towers, England)
Designers of The Smiler went so far as to hire psychological experts to help ramp up the fear factor on the $27 million ride that its public relations folk claim will "marmalize" riders, a term they invented that means, "feeling spaced out and mashed up."
Using mind-manipulating triggers such as giant syringes, spinning wheels, flashing lights and even tickling, The Smiler is meant to "blur the line between illusion and reality."
To up the game, Alton Towers staged a competition for the first rider, launched a Smiler game app and even branded sheep in South Wales with The Smiler's eerie face.
Bells and whistles
Length: 3,839 feet (1,170 meters)
Speed: 52.8 mph (85 kph)
Height: 98 feet (30 meters)
Insane trademark: 14 inversions
The Smiler, Alton Towers, Staffordshire, United Kingdom; +44 1538 703 344; 10 a.m.-5 p.m.; ticket price £35 ($53)
9. The Storm (Etnaland, Sicily)
Etnaland, a 40-acre waterpark located at the foot of a volcano on the island of Sicily, opened a new theme park in April.
Etnaland's main attraction is The Storm, a 105-foot (32-meter) coaster with a 70-degree first drop and a heartline roll (aka barrel roll), meaning the track twists 360 degrees around the train.
Etnaland also offers a Prehistoric Park with 21 life-sized dinosaurs.
Bells and whistles
Length: 2,625 feet (800 meters)
Height: 105 feet (32 meters)
Insane trademark: Two helix turns, 110-degree outbanks, 70-degree drop
The Storm, Etnaland S.r.l., C.da Agnelleria, Belpasso, Italy; +95 791 3334; 9:30 a.m.-6:30 p.m.; ticket price €25 ($32)
10. As yet unnamed roller coaster (Ocean Kingdom, China)
When it comes to superlatives in the world of coasters, China is the new destination.
"It's definitely a hotspot," says Dave Lipnicky of American Coaster Enthusiasts. "They've been building like crazy."
According to Lipnicky, the Chinese government has removed building restrictions, leading to an amusement park boom in China over the past 10 years.