Lol is a high-tech science-fantasy city caught up in the throes of a multi-factional civil war. The Republic, the Revolutionaries, the Less Violent Revolutionaries, the More Violent Revolutionaries, and the Wizard's Council are fighting block-by-block to rule the city, along with street gangs, black marketeer frogmen, pacifist techno-walruses, survivors of the sezrekhan-zombie-plague, and followers of strange cults. As well as the evil Bolt-1 and his army of robots hiding in the shadows, waiting for their chance to exterminate all life in the city.

RPGPundit Presents #77 has descriptions and details on all the major areas of the city, how to get there (and get out), the various factions, and detailed random encounter tables for each of the different regions controlled by the various factions (or no-man's land).

Sounds like Laputia or more like that flying gnome city from BX/BECMI D&D "Top Balista".

Where can I buy this?

At first glance, it reminds me of Synnibar.  

Quote from: Theory of Games;1087134Where can I buy this?

https://www.drivethrurpg.com/product/275188/RPGPundit-Presents-77-The-Grand-Floating-City-of-Lol

Violently opposed by Lulz, the four-leafed city of Trolls?

Quote from: kythri;1087166https://www.drivethrurpg.com/product/275188/RPGPundit-Presents-77-The-Grand-Floating-City-of-Lol

aaaaaand, purchased.

I can use this.

Chaos is a fine field for Drama, and Drama is the stuff of epic stories.

Quote from: Theory of Games;1087134Where can I buy this?

I'm sorry for the delay in responding, and glad to see you already found the answer and bought the product. I hope you enjoy it!