I said it was a bad comparison.
Still, I think if it was done right, it could be like a 2D RTS, where you control only one character. When the game starts, you can stick around the castle to build it up and work on defenses and homes and things, and when you get bored with that or if you need to, you can go with your army (or solo, I guess) and go explore and try to find the other people and fight them if you want.
Or perhaps a better example would be something with the character control and visual design of Diablo II but where the city can be attacked and destroyed or built up.
I don't think it necessarily needs to be PvP, or that different factions need to be at war all the time.
But again this is getting too complex. I think it would be nice, and along with Mizraim's idea of something that we start small with and add more to it as time goes on to make it a more full game.
This project is very ambitious, and would almost certainly take longer than a month, but could be playable in various stages throughout time.