Out of curiosity, how much game theory (and GNS Theory, and its successors in particular) was used in the construction of 5e? Was it used more or less than the surveys, etc?
— Jay Draper (@jay_jaydraper) May 27, 2018
We didn’t use anything directly. The keys to success were:
1. Understanding our audience (current and future) and their needs
2. Creating a game that met those needs
3. Extensive playtesting, refinement, and polish to make that game the best version of itself that we could craft https://t.co/AyF4Ies6MK— Mike Mearls (@mikemearls) May 27, 2018