Lack of behavioural understanding between designers and users is well indicated. Participation of potential users often exists at the very end of the design process. This research assume that a credible, understandable, experiential, and dynamic simulation technique in early design phases is likely to develop the existing environmental design process through effective users' participation. Literature indicates that users' participation is a function of their understanding of designers' concepts. Environmental Design is simply a 'process' of shaping the environment in 'space' and 'time'.
Environmental simulation is breifly a way of replicating existing or proposed environments.
Virtual Environments Virtual Reality or 'Cyber Space' is a term that is still not clearly defined. It can be defined as the illusion of feeling of being in a real environment while experiencing a synthetic environment. In virtual environment, the participant 'feels' like being 'there'. The more the synthetic environment is convencing in simulating context and events, the stronger the feeling of reality. A typical immersive-type Virtual Reality System Virtual Reality has been developing since late 1960s in Space and Military researches.