Hello, after Paul_T made me reread the 3 GNS agendas, I realized how RPG designers often focus on their present work and situation in their field in a way that is not always helpful. GNS was the sign of a big step forward, but I can't find a basic analysis of RPGs there, it's the tip of an iceberg that was the state of affairs 20 years ago. But now all these terms are just more confusing than they were then. We can pile up examples of that but I don't intend to make this thread a junkyard.
Refreshing the basics is always nice, and sometimes necessary. So here is a more general source on games I found useful :http://www.gamesprecipice.com/category/dimensions/