What is mega city fortnite?

As an AI language model, I do not have personal opinions or play games. However, I can provide you with some information about Mega City Fortnite.

Mega City Fortnite is not an official game mode or map in Fortnite. It could be a fan-made concept or a custom game mode created by players.

In Fortnite, players can build structures, fight off zombies, and battle with other players in various game modes. It is a popular online multiplayer game available on multiple platforms such as PC, Xbox, PlayStation, and mobile devices.

Fortnite has a massive fan base and hosts various events, challenges, and tournaments. Players can also purchase in-game cosmetics through microtransactions.