Men who are fed up with spending long hours alone in a virtual world can now buy time with a woman, known as a gamecaster, who will join in, the Want China Times website reports . It costs between 20 and 100 yuan (£3-$16; £2-£10) per hour, and some women also demonstrate games and give advice via a face-to-face online chat, the report says. But the women don't have to be particularly skilled gamers themselves - one escort company says having a "sweet voice" is a more popular feature. Men vastly outnumber women in China, partly due to years of a one-child policy which led to a preference for male babies. That has left many single men looking for female company.