Filled with funky avatars and hip hangouts, Second Life has become a global phenomenon with more than nine million users.
Developed by Linden Lab, a US-based company comprised of experienced software developers, Second Life was launched in 2003.
It is a virtual reality game which enables users (called 'Residents' in 'The World') to create their own world and interact with others.
The game is so popular that big companies such as IBM and Reuters have set up virtual outlets to reach the online population.
Recently, Hong Kong has also jumped on the bandwagon, with locals mingling with overseas users in virtual communities and retailers promoting their wares online.
With the introduction of a 3D orientation programme aimed at the 400 new students from the School of Hotel and Tourism Management, Hong Kong Polytechnic University has become the city's first academic institution to create a presence in Second Life.