Porque é que eu sou um viciado em Civilization I, II, III ou IV...:)

The "Just One More Turn" EffectFiraxis creative director Sid Meier is famous for creating games with the "just one more turn" effect, in which the player becomes so enamored with the progress of the game that they find it enormously difficult to stop playing — like reading a good book you can’t put down. Sid achieves this by constantly presenting the player with another challenge, another decision to make. The challenges are so engaging that the player wants to play "one more turn" to see how it turns out. Further, the player realizes that all of his or her decisions are important — even if they lose, they'll want to try again to see how a different decision would affect the outcome.Firaxis wants to keep kids engaged and playing because that increases our sales, while educators want kids to keep playing because they're learning while they play. Everybody wins — even the students!

What the Educators Say
“Will computers change the way we learn? We answer “yes”. Video games create new social and cultural worlds, worlds that help people learn by integrating thinking, social interaction, and technology, all in the service of doing things they care about … virtual worlds are powerful contexts for learning. “ — Schaffer, Squire, Halverson, Gee (2004)

Origem do texto: http://www.firaxis.com/community/teacher.php
Façam qualquer coisa pela vida...eu arranjo copias:)