More people enjoy being trapped in 'secret chambers' (2)

"The steering wheel, for example, is the real thing, which we managed to detach from a ship," says 30-year-old Tang.

She says the clues are meticulously designed and require knowledge of various fields such as foreign language, geography and mathematics.

The entire game process is monitored by a surveillance camera and controlled by a game guide.

"I give clues through a specially made drawer attached to the wall when I notice the players are stuck," says Cheng Yingying, game guide of The Lost Ghost Ship. She is also responsible for controlling the lights and audio effects.

Even with hints, the game proves challenging for most players. Among 590 teams that have played in the center, Cheng says, only three teams have successfully "escaped" from the room within one hour.

One of the centers known for its high degree of difficulties is Omega Room Escape.

All the rooms are designed with strict logical reasoning and comprehensive research, and are more suitable for larger groups of players.

"It's more interesting than just clicking the mouse," says university student Pan Mengying. She says some of the fun puzzles involve body movements that can only be realized in life-world games.

Cai Nizhe, chief operating officer of Omega Room Escape, says players are attracted to the reality games because they long for what they cannot find virtually.

"It's like, you still want to go for coffee with your friends even if you can talk with them online," she says.

The number of newcomers is mushrooming.

Bai Ge, 26, has done market research of more than 20 such centers in Beijing. His first self-designed room will open by May.

But he believes the market will be saturated soon. "Only the best will survive," he says.

Some center operators concern that the craze will die soon.

Omega Room Escape, for example, believes that re-inventing the themes is the way out.

For its third outlet, the staff is designing simpler rooms for smaller groups of customers, and they are cooperating with a team from Tsinghua University to add hi-tech elements to all the rooms.

To target foreigners, the company is also designing rooms for English-speaking customers.

But Tang of The Lost Ghost Ship believes a classic room is worth retaining, as there will always be new customers.

She says she will keep her rooms as they are, while looking for new venues to open new outlets.

We recommend:
Those Xiaorenshu we read in childhood	Trip planner: four-day trip to S China	Wonderful snapshots of flying buzzards
Forever Shangri-la: China's heaven on earth	Top 10 ever-victorious generals in history	Dreamy log cabins among woods
Top 10 best airports in China 2012	Mysterious Zhongnanhai in Beijing	Top 10 Chinese 'Kung Fu Kings' in Minguo period