Over the past year, more than US$ 1 billion have been pumped into 35 virtual worlds companies by venture capital, technology and media firms. This information comes from Virtual World Management, a leading media company that tracks the virtual worlds industry.

The biggest chunk of the US$1 billion came from Disney's acquisition of Club Penguin, an online game from New Horizon Interactive where kids take control of cartoon penguin avatars to waddle around, play minigames and chat with their friends. This acquisition cost Disney US$ 700 million.

Intel's US$ 110-million acquisition of 3D virtual worlds graphics technology company Havok made up the second-biggest part of the figure. A total of US$ 196.8 million came from investments in 33 different companies. Investors included Intel, Redpoint ventures, Disney, CBS and Time Warner.