User blog comment:I like yelmut/The Lore of MSM/@comment-38819577-20191108170842

Here's another piece of lore i may have found:

In Fire Oasis' bio, it says the following: "After searching far and wide for remnants of the Outer Islands (unsucessfully - they seem to have disappeared)".

Psychic Island's bio also says of "a cosmic island from ancient times that one day simply blipped out of Space and Time". That is Space Island.

As we all know, Starhenge fell from the Sky, becoming Celestial Island.

The Continent broke into pieces, with each piece becoming a Natural Island.

A translated section of the book in Following the Trail reveals that fossilized remains of Party Island have been discovered before.

My theory is that of course, the Outer Islands may have disappeared around the end of DoF and before the start of the original game. The Continent broke into pieces and became the Natural Islands, Party Island sunk, Space Island "blipped" out of existence, Cloud Island & Cave Island suffered as-of-now unknown fates, and Starhenge fell from the sky - becoming Celestial Island once hitting a Colossal.