Title: Online Game, Experience, and NCsoft

1. Ncsoft
 A. Online Service
 B. Online Game
 C. Online Game Business
 D. Social Phenominon
2. Building Blocks
 A. Technical components
 B. Knowledge components
3. Evoluation of Online Game
 A. 1st Generation
 B. 2nd Generation
C. 3rd Generation
 4. Virtual but real
 A. Something that is guaranteed to exist.
 B. Somebody that interacts with me.