I'm currently making a plot and RP based on my own personal Multiversal Setting. :D
It's got a lot of video game based cities, like Mysidia, from FFIV, (Then FFII when it came out. lol), Hyrule from Legend of Zelda, Baldur's Gate from Baldur's Gate, etcetera. Part of the plot is that there's a lot of other towns and places from JRPGs, that are Allied with each other against various different villains from different franchises. In other words it's sort of like WWII within a Fantasy World.

We will be making original characters, not existing ones.

Below is a list of Franchises that players can make characters from.
((I kind of had to alter some of the franchises a lot to make sense for a Role Play and a coherent plot in general. For instance, Chun Li is not from "China". She's from "Wutai" a China like area in Final Fantasy VII. :))

Double Dragon ((Shut up. I don't care if it's lame. It was the Chuck Norris of video games during it's day.))
Lufia (Google it. No, I don't care if you've heard of it. This is my Multiverse, RiverTam it).
Nestalgia.
FF I-XII and Tactics
Bravely Default
LoZ
Baldur's Gate
Lord Of The Rings
Avatarverse (Air Bender, and Korra)
The Elder Scrolls
Dragon Quest/Dragon Warrior
Tecmo's Secret of The Stars (Google it. No, I don't care if you've never heard of it.)
Warriors Orochi (China is called Zhong Guo, and Japan is called Nippon)
Willow (The Movie)
War Wind (Google it. No, I don't care if you've never heard of it.)
Warcraft (I know you've heard of this. ;))
Shadow Run (Google it. No, I don't care if you've never heard of it. lol.)
Dark Sun (Google it. No, I don't care if you've never heard of it. lol.)
Chrono Trigger/Chrono Cross
AvP (Though, probably not the AvP you know. This is more based on the nearly 25 year old arcade game. And man, did it Rock!).
Fallout