Probably still an open book. Listen to all the soundtracks, especially Myst 5, I'd say. (Myst 5 has an actual D'ni character and other strong references.)

Greetings, awesome people. :) Short version: Please implement a standard movement system which is similar to Portal or Tomb Raider where I move the same speed in every direction and my avatar's animations comply in a realistic enough fashion. One small thing which always bugged me while playing URU ...