@inproceedings{ author={Charles Darryl}, year={2003}, title={Enhancing gameplay: challenges for articifical intelligence in digital games}, 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/05163.18095.pdf} }