Some day in the future Colossus may be under threat of losing it's world record for biggest number of inversions, that's because Intamin have now released the design plans for a 12-Inversion coaster! However, it contains only 3 heartline rolls, but 5 Corkscrews! It also contains a Pretzel loop, Vertical loop and Cobra roll. Taken from ThemeParkReview, and Intamin's new website. If a park ever does build one of these, it does make me wonder how rough it will be with 5 Corkscrews.