This directory contains individual ideas in a raw form, straight out of my head. They don't necessarily fit together. I'm not making any attempt to make them work here. However they can be referenced in molecules directory. Go check that out.
Here is a great place to dump every possible game element.
Afterlife
aibot
Anxiety
Attraction
Bower nest home
Communication
conflict
consent
Death
Depression
dex
dimensions
Ecological Factors
Family Units
Fear
Giving gifts
global location
Home, birth and locations
Infidelity Jealousy and possession
Joy
Karma
legacyknowledge
Lifetimes, life lines
local location
Migration
Mood Mechanics
Movement and Navigation
Mud features
Names
object interaction and relationships.
Satisfaction
Scent
Senses qualities
Sensory Input
Sex
Source Material
Space
Special Effects, or the technical medium
Survival Technology
What makes this game pleasurable?
Nothing to see here.