In my current E6 campaign, magic = technology. The PCs, however, are unaware that they're actually in a postapocalyptic, formerly high tech world (the players, OTOH, are gathering hints of my premise and are enjoying themselves greatly). To them, it's more like the stone age, and strange occurrences are understood as magical in nature. But the real reason their party Druid can do amazing stuff is because the ecosphere is still seeded with nanobots. At certain places, she will even be able to intuitively interface with a few still functional weather sattelites, and I expect the high point of the campaign to be when she accesses some deep core drills buried way below the surface of the earth, to release an actual volcano!
The PCs' enemies are a caste of techies (Wizards) who have retained their high level of technology. They regularly employ personal force shields (Mage Armor, Shield...), wield powerful beam weapons (Scorching Ray, Magic Missile...), can project holograms (Silent Image, Mirror Image...), and often employ stun and flash grenades (Sleep, Glitterdust). They also have access to pheromones of overwhelming strength (Charm Person, Scare...). Their nanobots can only output so much energy each day, though, and they have to download task matrices from their personal computers after resting in order to control their nanobots (Vancian casting from a spellbook).
A bunch of AIs have also survived the holocaust, mostly dislocated in the wreckage of the planet's former infosphere, and barely sentient. There's one NPC (another techie) who manages to interface with them using his built-in nanobots, personal cybernetic augments, and improvised consoles. He is able to channel individual AIs for extended amounts of time, which greatly enhances his capabilities. Mechanically, he's a standard Binder.
