Building A Personal Game Taxonomy

One of the things I'd love to do one day is work out a personal gaming taxonomy; something I can map games to as I encounter them and that helps clarify their relationships with one another. I'd want to do it visually/aesthetically because that's what I respond to most strongly and what stays with me long after the other details of a game have faded. I remember a game because it was visually "crunchy" or "cold" or evocative of a very particular mood/level of cosiness.