Interactive 3D environments by using videogame engines

In this paper we study state-of-the-art technologies to design interactive and cooperative 3D environments that are based on videogame 3D engines. We provide, first, a categorization of videogame 3D engines from the point of view of their usage in creating interactive 3D worlds and show a comparison of the most important characteristics. Then, we show an example of how we used a commercial videogame engine to create an interactive an enjoyable visit to an archaeological site.