https://www.cnet.com/news/fortnite-down-for-maintenance-just-as-radical-heights-launches/

So naturally, it's a perfect time for Epic Games to have to shut down Fortnite servers for emergency maintenance on Thursday. At the time of writing, Fortnite has been down for eight hours. 

The battle royale genre, where you parachute onto sprawling, weapon-littered terrain, do battle with 99 other players until only one (hopefully you) remains, was popularised last year with PlayerUnknown's Battlegrounds, or PUBG. Since then, Epic Games has released a free battle royale mode for its Fortnite game, which now rivals PUBG in popularity. Radical Heights, by Boss Key Productions, is the newest challenger in the very-hot-right-now genre.