Paradox space



A Universe in Homestuck can be best defined as "a place that has its own chronology". The purpose of Sburb is to create universes.

Earth's Universe
This one's obvious. Earth is the home planet for the Homestuck Kids, their Guardians, the Exiles (in the Future), and of course Andrew Hussie. This universe was created by the Trolls' Sgrub session.

Alternian Universe
The Trolls' Universe consists of their home planet, Alternia. It is also home to the Midnight Crew and.

Incipispheres
An Incipisphere is a much smaller universe/dimension created for every session of Sburb. Players are transported there after using their Cruxite Artifacts and spend the rest of the game there. It is unknown what happens to an Incipisphere after Sburb is completed.

There are only two known incipispheres, the kids' incipisphere and the trolls' incipisphere.

The Furthest Ring
The Furthest Ring is a timeless void beyond the furthest reaches of all Incipisphere instances (and arguably not technically a universe). It is the home of the Noble Circle of Horrorterrors, as well as the servers containing Rose's Walkthrough and the ~ATH code for summoning.

Interaction between Universes
Although the players abandon their home planet early on in the game, Skaia sends hundreds of meteors from The Veil to different parts of the home planet's timeline through space/time portals. Most meteors go directly before the players' entry to The Medium to provide an impetus for entering in the first place. Others send things to the host planet such as Exiles, Paradox Clones, Laboratories, and Frog Temples. Additionally, the game allows players access to the internet of their host planet.

At present, the only interaction between Earth/The Kids' Incipisphere and the Alternia/The Trolls' Incipisphere is through internet communication. The Trolls, after finishing their session, troll the kids from their session's Veil. Kanaya was also able to download Rose's Walkthrough. Additionally, Vriska's and Tavros's psychic powers can be used across universes, but they are limited and take more effort to use. However, it seems there may have been sort of physical interaction between them, as Aradia Megido (and later Spades Slick) ends up with the Crosbytop Computer and Jade ends up with what may be one of 's Magic Cue Balls. However, it's also a possibility that these items were the product of time shenanigans combined with the kids and trolls exchanging Alchemiter codes.