Part of the fun of going on a rollercoaster really is the fear you experience while you’re on it.

Sure, you might act like you’re well hard, but there’s always that moment on a ride when you at least think, ‘oh s**t’, or question your life choices.

But of course, you’re never going to a theme park with a real, true worry that you might die – unless that’s your plan, and you’re on the hypothetical ‘euthanasia rollercoaster’.

And yet, this guy was faced with a real shocker when he was left scared for his life.

Shown in shocking footage, the man ended up having to jump out of a moving rollercoaster in a ‘life-saving’ moment.

Choosing to remain anonymous, the man was riding the Desert Storm at Castles N’ Coasters in Phoenix, Arizona, US, on Sunday (24 November).

The tallest, fastest and first looping roller coaster in the state, it features two vertical loops, a curved drop, and two helices, with a peak height of 90 feet and a drop of 80 feet, going at a maximum speed of 50mph.

So with all that, you’d want to be sure you’re strapped in nice and tight, right?

Well, the bloke claimed to NBC News affiliate KPNX that wasn’t quite the case.

“We start the climb and you hear the click of the normal rollercoaster,” he explained. “We get just about to the top and I hear a click different from the click of the chain taking us up and so I checked my lap bar one last time and it released.”

Claiming he had ‘mere seconds’ to act on whether he stuck it out or got himself off, the guy decided to climb out of the ride while it was still moving.

In a slam of the ride staff, he claims his safety bar wasn’t physically checked before the ride began, and that they weren’t aware what was happening while he was up in the air.

“I think the scariest part was the negligence of their part and just the absolute carelessness that they had throughout the entire thing,” he said.

“She (the member of staff) should have been watching that car and when she saw me climbing out, she should have been able to hit an emergency release.”

In the shocking footage, the man can be seen climbing out of the moving coaster and onto the emergency stairs alongside him.

He added that he’s filed an incident report with the park.

LADbible has contacted Castles N’ Coasters for comment.