The First Scenario (unofficially called the Shadow Hub) is the Hub world that was used in Alpha.
The world has far brighter lighting than other worlds and biomes.
Other features include:
In one of the houses around the edges of the world is a yellow and blue object that displays ?! above it. Highlighting it displays the following message:
|“||Qubesly Says: This world won't last forever, so don't get too attached to it.||”|
It was likely left over from when the game was still in Alpha, intended to indicate that it would be replaced with the current Hub world.
In the Sea of Regret, there are multiple Cornerstone plots. They function exactly like normal cornerstone plots, and are used to access the underground maze mentioned below.
In the main plot of land is an area blocked off by scaffolding, with a sign which comments that there was a cornerstone plot there, which is no longer usable.
Near the bottom of the world in the First Scenario, a maze system can be found. It can only be accessed by claiming a Cornerstone, digging to the bottom of the world, and clearing out the edges of the cornerstone plot.
Inside the maze are multiple skull decorations; when highlighted, each of them will display the name of one of the Alpha supporters, as well as a short comment.