Relevant username 😏 <| sep |> i think the first complete of 60 is a guaranteed reward or something <| sep |> Humans spread through the Cosmere in several ways . The first humans in the Cosmere lived on Yolen . If Khriss is to be believed , they were created by Adonalsium . Some of them either migrated or were brought to other planets , populating them before the Shattering humans are not native to Roshar , for example , though I don ' t remember if they arrived before or after the Shattering . It ' s also possible that Adonalsium created more on other planets . After the Shattering , the Shards separated and some created more people on still more planets using the humans of Yolen as a model such as Ruin and Preservation . As for why it was humans that spread around so much , rather than other races like dragons or the shodel , we really don ' t know at this point . We ' ll probably have to wait for Dragonsteel for a complete explanation . We have no idea what it takes to become a worldhopper , but from the variety of worldhoppers we ' ve seen , it like everyone has the potential to do it . Personally , I think it just requires special knowledge , and maybe some sort of special item . Sort of like how Hemalurgy can be used by anyone in the Cosmere , you just have to know what you ' re doing .