So I've been running my own setting for a while now; it started out as 3.5 and morphed over to Pathfinder when our group made the switch.
The big difference in my little world is the technology level, the base game started at American Civil War level industry while keeping the traditional high level of magic, this has brought about some interesting applications as having steam engines without the need to haul tons of fuel and water (just use a magic item enchanted with create water and heat metal) makes them far more practical for all kinds of things.
Now as to my actual question one of my players in this campaign is playing a crazy smart inventor (almost mad) scientist device builder, I don't recall the exact name of what he has but it's an alternate Alchemist class; he has been doing a lot of experiments with magnetism and has the skill checks to back up his ideas(he has on occasion and with help broken 100). Already he has been able to develop magnetic rail runs and is well on his way to several other developments including a line of developments that that could bring his character to discovering plasma. Now all of this is fine by me, I run a living world and welcome (and in fact expect)the characters to change it in some way by the end of a campaign. This however is a drastic advancement far beyond what I have implemented before. If things go where I see them heading, I see the logical path being to bring this world into a setting that holds a very "Blade Runner" feel to it, but I'm looking for ideas on how to present the transition, so it feels real as this new advancement transforms the society.
Also worth noting that all this development is taking place in the middle of a cataclysmic war touched off by a planer invasion of mechanical creatures.
