A story that I thought about

[The chaser]

Very nice review, Behemoth, really

I'll have in consideration what you have said. Gotta say I haven't refined the details, but you've put things way easier.

You've given me an idea. How about

Spoiler below!

Lucy was a devout christian and had an accident. Then, Ryan would be angry against the god that Lucy prayed to, causing him a desire to destroy the world that god would have created. Maybe Lucy was an usual worker and Ryan didn't even have a wife, maybe they were lovers.

I picked Ryan because it's the name of the "villain" in Bioshock. Sort of a reference, and I just like that name, totally changeable though.

I forgot to mention one VERY IMPORTANT thing:

Spoiler below!

Ryan creates a serum that makes people eternal but not immortal: as long as the person eats, drinks, and sleeps, just as usual, and as long as they have a daily ration of that serum, they will live forever. However, you aren't immortal, if you fall through a cliff the serum wouldn't matter. That's what Ryan actually builds the city: He wants to create a new world and wants to live forever with Lucy, who, instead of being shred to pieces, she would have died because of a gas (I don't know, something that makes you stop breathing). Then, by making an artificial body for Lucy and the serum, he could live with her forever in HIS world.

Also I forgot to mention that the people in the city are orphans, beggars, and all sort of people who got abandoned, and that searched a new place to rest.

Thank you for your awesome review, Behemoth. I'll definitely have those details in mind. +1