How 'bout that! I didn't realize they offered Exile.
Uru is a Myst subset featuring the discovery of the lost D'ni civilization. The following versions have been released:
-- Original Uru: Ages Beyond Myst
-- To D'ni, first Expansion Pack
-- Path of the Shell or PotS, second Expansion Pack
-- Complete Chronicles (two CD's containing original Uru: ABM and To D'ni + PotS)