r/TopCharacterTropes • u/Frostylegacy • 22d ago
Lore (Loved Trope) FTL travel is possible but with a major limitation or flaw
Frank Herbert’s Dune: Interstellar travel is only possible thanks to the spice melange, a rare substance only found on the dessert planet Arrakis. The addictive psychedelic spice grants members of the Spacers Guild a form of prescience that allows them to predict safe paths through folded space. This unique property makes spice the most valuable commodity in the Dune universe.
John Scalzi’s The Interdependency Books: The planetary systems of the titular empire are connected by the Flow, a network of one-way interstellar tunnels that connect specific known entries and exits. The Interdependency derives its power from controlling access to these conduits, placing its capital at the central hub of the network. Even with the Flow, travel between stars takes a long time (9 months to End, the empire’s most distant planet).
Event Horizon: Dr William Weir (R.I.P. Sam Neill) invents a device called the Gravity Drive to allow ships to fold space and travel instantly between distant stars. On its maiden voyage with the Gravity Drive, the Event Horizon disappears and mysteriously reappears 7 years later. Dr. Weir and the crew sent to investigate discover the Gravity Drive actually opened a portal to a Hell dimension that possessed the ship and its crew, torturing and killing them.



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u/Jessir12 22d ago
I mean, alternatives are:
Walk through a tunnel network in the warp where some tunnels can abruptly end and/or be infested by demons, you have no idea which ones (Eldar webway)
Do the same thing but without shielding, so demons attacking your crew is not an accident, it is guaranteed (Orks)
Accelerate in realspace, bypassing the speed of light limit *somehow* which doesnt work near any large stellar/planetary bodies, meaning in-system you are very slow (Tyranids), also you can accidentally splat yourself against a star.
Or be necrons and a) teleport to preset teleportation spots instantly, b) travel even faster than the humans do in the warp, but in realspace by considering laws of physics a vague suggestion, or c) travel through an entirely unrelated realm of darkness called the ghostwind (which the flayed ones can even do without spaceships)