Thread:Metal Mario875/@comment-32179697-20180429172634/@comment-26374068-20180429190009

Sorry, that took longer than I wanted it to.

Here's a scene for the dreams making up the Dream Stone.

Every time Luigi sleeps, he creates another Dream World, so that's where I get the "every time they sleep" thing from. Plus this, where everyone falls asleep and begins contributing countless dreams the instant they doze off.

And as for how long it has existed, the date the Pi'illo Kingdom existed was referred to as an "era." The date that these times take up varies upon your source; but some of the newer things in Science say that eras are tens of millions of years. The Geological Time Scale is my source.