Fortnite is a third-person online battle-royale action game launched as an early-access title, developed by Epic Games and People Can Fly. The game was released for Microsoft Windows, macOS, PlayStation 4 and Xbox One on July 25, 2017.

Fortnite was originally launched as "Fortnite: Save the World", a co-op sandbox survival game with four players working towards a common objective on various missions. On September 26, 2017, a separate stand-alone free-to-play version of the game called "Fortnite Battle Royale" was released. It moves away from the co-op elements of the game in favor of a battle royale game-mode for up to 100 players to fight in increasingly-smaller spaces to be the last person standing.

Fortnite Battle Royale is the game used in Fortnite esports, and is a direct competitor to PLAYERUNKNOWN’S BATTLEGROUNDS (PUBG). Epic Games announced that they will be providing $100 million for Fortnite esports tournament prize pools in the first year of competitive play, and the Fortnite World Cup will be coming in 2019.