Fan mission creators should make notes, because Precious is - while not a ground breaking experience, but certainly - an exceptional example of how to use space well. Also, the secrets are fun to discover too. Those who look for hardcore thief experiences may get disappointed by this mission, but players who want to explore a solid and well designed map should go no further. No over-sized, over-complicated, over-ambitious geometry here, just a great and authentic environment. In my book, that's something that should be admired.