This is awesome! 
Understanding Games is series of four games explaining the basic concepts of video games. The tutorial-style episodes deal with rules, motivation, learning and identification in video games. The player is guided through each episode by the narrators Bob and Bub, who explain core concepts of games to the player. The player can experience these concepts directly while playing the integrated games.
Understanding Games versucht Grundlagen von Computerspielen zu vermitteln und mit Hilfe von verschiedenen Spielen für den Benutzer direkt erfahrbar zu machen. In vier Episoden erläutern die beiden Erzählfiguren Bub und Bob, welche Rollen Regeln, Motivation, Lernen und Identifikation in Computerspielen einnehmen.
Download the book (german, ~40 mb):
[...] See also: Understanding Games [...]
Pingback by Game Ontology « c# to javascript, actionscript — January 20, 2011 @ 11:15 am
[...] Understanding Games [...]
Pingback by Pattern Recall – Gamification « The book of inspiration — February 3, 2013 @ 10:03 pm