The DM forgot where he left a minor city and went with the nearest equivalent, only realising later that we were in Osc-something, six days travel away from where we should have been in Osc-Somethingelse. And we had met the 'right' NPC's for Osc-Somethingelse too. I mean I met my hot insect baby-mamma and had hot inset sex. Dumped the kids on her too. So that happened.
So here are a bunch of reasons that you might have mixed up two city-states. I put the same-context dependant ones in the front and numbered the others so you can use them as a table if you need to.
- Love can move mountains and also city states. It was a miracle of love, the kind that happens to Lancelot when a fucking castle appears out of nowhere so he can bone Guenevere in peace.
- Deathfrost Mountain time emanations. Its near Deathfrost Mountain, that place if full of temporal shenanigans. Maybe we went all the way to the right place in a moment?
- The journey between the two cities is so fucking boring and so free of incident that, like a five hour shift on the biscuit lines, the moment its finished its simply wiped from the memory.
- Hot astronomer girlfriend swapped cities so she could get parallax on a particular star formation and we happened to go to the right one.
- Hot insect girlfriend organised city government-swap with Osc-Something for complex dynastic and economic reasons. Like a house-swap.
1. Names of all local cities changed regularly to confuse infiltrators from very-nearby enemy state.
2. Cities 'Harrisoned' now twinned in time and space. Kind-of reflections of each other but not necessarily causally connected. Like the Mad Max films. Its all a bit vague but probably a metaphor for something.
3. Cities 'Mievilled' A bit like like a Harrisoned city but a bit more practically worked out. They are separate but somehow share space. You could walk down a street in one and come out in the other. This is regular and people know about it but no-one takes advantage of it for COMPLEX POLITICAL REASONS. This is definitely a metaphor, for capitalism.
4. City 'Gaimaned'. Deal with para-deity means single city story-locked and eternal so long as people remember it, but the collective memories shape its physical expression. Council big on intellectual property laws and punish silly songs about the city with death. Will invade to stop rumours about them spreading. You went to the same place but it was different because the memories of it had changed.
5. Its the same city. Djinn fly it back and forth at dawn and dusk. You just went at different times.
6. Djinn again, one was ordered to build city B in a single night. Sneaked a few millennia into the future and took the ruins of city A and built them of that. They are literally the same stone. Scholars from City A go to City B to analyse relics and stones and try to work out their future history.
7. The second city is actually a necropolis of the first where bodies rest in simulations of their former homes. The people you interacted with were g g g ghoooosts! (Also if you saw old friends it means they're dead.)
8. Second city built as vast copy of the first by trillionare idiot obsessed with history and tales of old culture. Like those americans who buy London Bridge. An inhabited folly an a gigantic scale.
9. Mission-Impossible style plot by well resourced enemies with small army of illusionists and actors to persuade you one place was in fact another. You got Truman-Show'd.
10. Whole population swaps back and forth every 12 years in vast processions for ritual reasons. You jut missed the swap.