Well, it's yet another Sburb session. What makes it different from the rest?
1) It's Portal-themed
2) It has a large number of players (employees of Aperture Science and Blue Portals Development Center)
3) It has an odd number of planets (normally Prospit and Derse dream tower system would require an even number, but I sorted it out)
a. I named the planets after my favorite Portal mods: Land of Access All Areas (referred to by other sources as Land of Night and Data) (dark green), Land of Blue Portals (light yellow) and Land of Portal: Prelude (brownish gray)
4) The Derse of the session is blue rather than purple (orange and blue are the colors of Aperture Science portals)
Now if I have to introduce players/employees one by one, I'd go way further than the troll session did in actual Homestuck. (Introducing 12 (13?) trolls one by one and keeping it short was quite a challenge for Andrew, but he succeeded. But introducing hundreds of employees one by one just overdoes it.)
So instead, I gave you the cosmology of the Incipisphere of the session and you are free to go anywhere.