In his gaming blog, Neel Krishnaswami described the game in November 2003: http://www.20by20room.com/2003/11/lexicon_an_rpg.html Essentially, players create a lexicon letter by letter. You can reference existing and non-existing entries, but all references must be filled. It's only slightly nomic-like, more of a world-building exercise, and more for the imaginative folks than the rules lawyers.