Books where characters can hop between versions of the world, like in A Link to the Past or Lords of the Fallen (2023)?
There's a game mechanic in e.g. A Link to the Past (1992) or Lords of the Fallen (2023) where characters can instantly teleport between "light" and "dark" versions of the same world, in the same location, and they can do this at roughly any time or location (not just where there's a portal, as in Dark Matter by Blake Crouch IIRC), and this fact is used to navigate various obstacles. E.g. if a barrier exists in v1, they can hop to v2 where the barrier is broken, pass the barrier, and then hop back to v1 to be past the barrier in v1. Note this is not time travel: the character is always in the present, but jumping between what a physicist might call "different Everett branches."
My ideal version of this would have several different explorable Everett branches (not just 2), and characters would spend enough time in several of these branches to learn their differences and similarities, e.g. one branch could be the normal-ish world, another could be a post-apocalyptic version, another could be similar but a radically different religion dominated and so all the customs and governments are different, another could be similar but a difference species dominated the land, etc. Bonus points if some characters (perhaps with a magical artifact) can get a brief sneak peak of what an alternate branch looks like at their current location before making the full hop, a la Lords of the Fallen (2023).
Are there speculative fiction books (not just fantasy) where this mechanic is featured heavily?
EDIT: From what I've read so far, the books that seem to fit best so far are:
- Shades of Magic series by V.E. Schwab
- The Talisman series by Stephen King & Peter Straub
- The Space Between Worlds by Micaiah Johnson
- The Long Earth series by Terry Pratchett and Stephen Baxter
- The Chronicles of Amber series by Roger Zelazny
- Eternal Champion series by Michael Moorcock
- Deep Secret by Diana Wynne Jones
- The Walls of the Universe by Paul Melko