PENS
How do you measure the player experience?
Go beyond surface expressions of fun and understand basic psychological needs provided by a game
PENS can help lower learning curve
This paper talks a lot about improving player outcomes, pretty complex and interesting, may be worth a reread
OFAs: Opportunities for action, things that the player can do in the game world
based on SDT
what players label as enjoyment or fun is the experience of needs satisfaction
PENS measures SDT but goes further and measures presence / immersion and intuitive controls as well
