Kevin Nunn (@kgnunn) looks at the prisoner’s dilemma and how it can be used in games:

http://kevingnunn.com/2014/06/13/be-ye-friend-or-be-ye-foe-part-1/

http://kevingnunn.com/2014/06/17/be-ye-friend-or-be-ye-foe-part-2/

http://kevingnunn.com/2014/06/20/be-ye-friend-or-be-ye-foe-part-3/

http://kevingnunn.com/2014/06/25/be-ye-friend-or-be-ye-foe-part-4/