just watched the latest Video and i figured i contribute my thoughts.
1. People like hearing stories about people (not necessarily humans, entities in the broadest sense, anything that seems to have a sense of self and that they can relate to).
2. People can relate to archetypes especially, i do mean Jung's here: https://en.wikipedia.org/wiki/Jungian_archetypes
In that sense, i think certain types of humor (the ones you guys at kickstarter have) are archetypical or
relate to them somewhere.
(?) 3. Maybe puzzles get less of a story-bump if they involve people. Not "make that machine do something" but "Resolve this interpsychological situation" or, put more egocentrically: "make that protagonist do something". I think that is what make Psychonauts so great.
Regards & Love