Cities

This is a unreleased building, found in the changelogs

Cities is an upcoming feature/Building that's coming in surviv.io, when will be added is still unknown.

General Info
After the "" event, there is a text on the change log that says:

"We're busy prepping our next update, but in the meantime, you can forage for leaks on our Discord server or get blasted by memes on our Instagram."

The next update they're talking about is probably the City update, which is going to be one of the largest update in surviv.io, along with the river update.

Trivia

 * This may be introduced in the Crossing Bunker_Mode

Changelog
In the changelogs, there is a part that says: -Better Event Mode Support

-Custom/Private Games

-Cities