This can be anything from Hyperspace in Star Wars, Warp Drive in Star Trek, travel through the Warp in Warhammer 40k or anything else.
I’ve always liked “slow” FTL travel, where going a few light-years still takes a few days or so. I also really like travel through an alternate dimension like in 40k, Event Horizon, Witchspace in Elite Dangerous.
I wanna know your favorite versions, or do you prefer stories that obey the laws of known physics, like the Expanse or Rimworld?
Yeah they have some crazy complicated formula they use to fold space, but no one knows why it works. They made computers illegal so had to use drugs to make humans capable of doing the calculations. Over time the navigators mutated into worm-like creatures that live in tanks of spice.
I like Dune’s FTL the best of any since it’s not just beep boop… ship goes fast. They can go anywhere in the Universe, but there’s a huge cost to it and shit gets weird.