Written By: Atrus
Appears in: Myst, realMYST, Exile (mentioned)
Art Created By: Chuck Carter
Atrus also remarks on the wide variety of sounds he heard while visiting Selenitic: waterfalls, whistling winds, fiery chasms, the sound of wind whistling through peculiar crystalline formations. In an effort to secure his Myst Linking Book on that Age, Atrus devised a lock which required inputting the proper sequence of sounds into a device. He also created a vast maze in the underground caverns of the Age, which can be traversed by what has been deemed the "Mazerunner".
RAWA has commented on the name of the Age as being related to the moon (The Greek goddess of the Moon was at one time called Selene). It is possible, but not confirmed, that the meteor storm which Atrus encountered on his first night there was caused in some way by the Age's moon. Another possibility has to do with a certain mineral which may be present in the Age, called selenite, and may be what the crystals are made of. However, the exact reason Atrus chose to name the Age as he did is unknown.
Map of Selenitic Age from Myst Masterpiece Edition: