So take your time crafting all the details of this functional roller-coaster model. This LEGO® Loop Coaster (10303) is a building project for adults. It’s time to relive the thrills of your favorite roller-coaster rides. You can check out past reviews of Fairground Collection sets here. So it's probably a case of a longer development period for the Roller Coaster with the elements being created for that set but getting released first in another. However it doesn't take much time to find that some track parts were available from 2017 in set 70922-1 - The Joker Manor. Interestingly the manual for the Loop Coaster states that 2018's Roller Coaster first introduced the new track system that is now used ubiquitously across all themes (not always as track).

And if it wasn't for the Loop Coasters development I wonder if it would still be available now. That set is 10261-1 Roller Coaster and was a huge success being retired after over 3 years in December 2021. As I'm sure many of you are aware this isn't the first coaster in the collection. In the manual for the Loop Coaster LEGO provide a timeline for the Fairground Collection which retroactively adds other sets into the collection, the earliest being 2014's 10244-1 - Fairground Mixer. The Fairground Collection (first coined on the box of set 10273-1 - Haunted House) has become one of those sub-themes that has as big of a following as any true theme does, like Modulars or Winter Village. You just have to wait in line for 2 hours before getting to ride. The latest addition has our minifigs climbing to new heights and twisting through two inversions.

Planet coaster inversions mod