Complex sentence: The ride is loosely based on drag racing and is the fastest rollercoaster in Europe, in similarity to Stealth at Thorpe Park which opened in 2006, though this partly changed with the retheming of Ug Land into the Dark Forest for 2010.
Split into simpler sentences: The ride is loosely based on drag racing and is the fastest rollercoaster in Europe. It is similar to Stealth at Thorpe Park which opened in 2006, though this partly changed with the retheming of Ug Land into the Dark Forest for 2010.