TY  - BOOK
AU  - Koster,Raph
TI  - A theory of fun for game design
SN  - 1449363210 (pbk.)
PY  - 2013///
CY  - Beijing
PB  - O'Reilly
KW  - Computer games
KW  - Design
KW  - Philosophy
N1  - Previous edition: Scottsdale, Arizona: Paraglyph, 2005
ER  -