Thrill-seekers in France unimpressed by skydiving, rock climbing and other extreme sports are turning to designer kidnapping to test their limits.

For a £1000 ($1633) basic abduction package, participants are seized by strangers, bundled into a car, bound and gagged, and kept in a cellar for four hours.

No kidding ... (right) for about $1600, you can be seized by strangers, bundled into a car, bound and gagged, and kept in a cellar for four hours, much like the 1997 film The Game (left), which starred Michael Douglas.

If that sounds too tame, boat chases and helicopter escapes can be added to the tailor-made experience, and clients kept for longer periods. The maximum incarceration is 11 hours.

The website of Ultime Realite, a company in Besancon, eastern France, said: "You will go through the real sensations of violence, terror and fear of a real kidnapping – a psychological shock that you won't forget in a hurry."