system
Given the following post, respond as if you're commenting on Reddit:
human
[Thor] Does Mjölnir work in other universes?

Would Thor be able to use the hammer in an Odinless, or Asgardless, universe? Or what happens if that universe has different rules regarding who is "worthy". Ex: Thor travels from a healthy 616 to such a universe.
gpt
The enchantment is on Mjölnir itself; hopping universes does nothing to change or weaken its magic in any way. The new universe's "rules" will likewise be irrelevant; Mjölnir itself (or, rather, the magic cast on it) still makes the decision on who is and isn't worthy to wield it.