@inproceedings{ author={Roudavski Stanislav and Penz Fran\&\#231ois}, year={2003}, title={Space, Agency, Meaning and Drama in Navigable Real-Time Virtual Environments}, isbn={ISSN 2342-9666}, booktitle={DiGRA \&\#3903 - Proceedings of the 2003 DiGRA International Conference: Level Up}, url={http://www.digra.org/wp-content/uploads/digital-library/05150.54561.pdf} }