Koster, Raph <br/><br/>
(A) theory of fun for game design / 
Raph Koster. 
 -  Paraglyph Press  2005. 
<br/><br/>14227 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Games
<br/><br/><label>LC Class. No.: </label>GV1201  / Kos