Batman appeared in Fortnite, and what would Batman be without the Joker? Epic Games understood this well and decided to integrate bombs of this ugly character into its game! Your goal? Defuse them in order to complete a challenge!
In all, there are seven Joker gas canisters in Fortnite. You must deactivate three of them as soon as possible, before the challenge ends. Because as it is an additional challenge, there is a good chance that in a few weeks, it will no longer be available at all.
Where are the Joker bombs?
As you can see on the map, the Joker's bombs are scattered all over Fortnite. But don't worry, you only have to defuse three of them, just like the other challenge asking you to turn on a Bat-Signal.
On the map from u/flapjack2626 on Reddit, the gas canisters are symbolized at the bottom right of the map, on the legend
What does a Joker bomb look like?
The Joker's gas canisters are quite visible in Fortnite, you'll see it. You will only have to approach each of them, press E (default key) and deactivate them. Above all, do not quit the game if you want to validate the challenge, you must make a top 1 or be eliminated!
Good hunting, and be careful behind you, Joker is never far away...