@inproceedings{
author={Manninen Tony and Korva Tuomo},
year={2005},
title={Designing Puzzles for Collaborative Gaming Experience \&\#38\#8211 CASE: eScape},
isbn={ISSN 2342-9666},
booktitle={DiGRA \&\#3905 - Proceedings of the 2005 DiGRA International Conference: Changing Views: Worlds in Play},
url={http://www.digra.org/wp-content/uploads/digital-library/06278.27071.pdf}
}