JACKSON - Riders will experience the feeling of weightlessness on a new roller coaster that's planned for a New Jersey theme park.

Six Flags Great Adventure in Jackson on Thursday unveiled plans for Total Mayhem.

The free-fly coaster will lift riders up a 12-story, 90-degree hill before flipping them head-over-heels at least six times in wing seats, providing a feeling of weightlessness.

"We are thrilled to unveil one of the newest concepts in roller coaster engineering with Total Mayhem," said Park President John Fitzgerald. "Six Flags Great Adventure's world-renowned coaster collection will expand into the realm of insanity - or spinsanity - with this new, vertical coaster that delivers gravity-defying somersaults with utter unpredictability."

The new roller coaster is scheduled to be completed by the spring of 2016.