The limited time 50 versus 50 mode will be available through Sunday, December 17, with additional unique game modes and content planned for the future.
The new mode is a special 50-vs-50 mode, and it's available to play right now.
Fortnite enthusiasts may have been waiting for this mode and are nearly certainly not disappointed with its rapid introduction and implementation.
Epic Games has also announced that Fortnite continues to see quick growth, with more than 30 million players since the game's July launch.
Ogbonna backs West Ham fans to lead them past Chelsea
The manager also has a decision to make over who starts in goal, after Adrian impressed in Joe Hart's absence last weekend.
The game's latest 1.9.1 patch added support for 4K on the Xbox One X and, "due to overwhelming popular demand", formalised what has quickly become one of Fortnite's headline features: rocket surfing.
Enjoy the 50 vs 50 Mode Fortnite Battle Royale trailer below. It remains to be seen, however, if this mode will truly rival battle royale's development.
While Fortnite has much to offer with its Battle Royale and Save The World mode, Last Team Standing mode may be a welcomed addition for the game's many fans. This will set Fortnite apart from PlayerUnknown's Battlegrounds, which has capped its team size at 8 in custom matches.