Lobby

The Lobby is the first area you enter after the first menu, here you can find 7 portals and a giant hologram of a celestial being. There might also be some event things.

Player House
There is one yellow portal furthest to the left, here you have the ability to:
 * View all pieces of furniture you have collected.
 * Change characters by interacting with the other character. (Kett or Alniyat)
 * Change skins by interacting with the mirror (Kett's cosmetics or Alniyat's cosmetics)

Worlds
There are 5 blue portals in the center, here you have the ability to:
 * Select a story mission (Private or Public)
 * Change characters by interacting with the other character. (Kett or Alniyat)

Multiplayer
There is one green portal furthest to the right, here you have the ability to:
 * Join public worlds and play with up to 5 other players.