 In 2013, the first "Revision B" of their 10 inversion model opened in China, featuring the same basic layout with a different first drop drop and more modern rolling stock.Four additional "Revision B" models have been built.In 2002, the first clone of Monte Makaya, Avalancha at Xetulul, and the world's first ten-looper, Colossus at Thorpe Park, opened.