Fortnite is an online video game developed by Epic Games and released in 2017. It has three different game mode versions, which can share the same general game playing method and game engine: fortnite: save the world, a collaborative shooting game, which can survive up to four players to fight zombie like creatures and defend objects with defences that can be built; fortnite battle royal, a free battle Royal game, with up to 100 players competing for the last seat; and fortnite creative, players are free to create worlds and battlefields. The first two game modes were released in 2017 as the first experience version, and creative was released on December 6, 2018. Savethe world is only available for windows, Mac OS, PlayStation 4 and Xbox one, while battle royal and creative are published for these modes. Platform, as well as Nintendo switch, IOS and Android devices.

Despite the success of the first two games on Epic Games, fortnite Battle Royale has been a huge success, attracting more than 125 million players in less than a year and earning hundreds of millions of dollars a month. Since then, it has become a cultural phenomenon.

Fortnite initially created internal game jam in Epic Games after the release of war machine 3 around 2011. Although not originally one of the games developed during jam creation, the concept of integrating architectural game types represented the emergence of games such as minecraft and terraria, as well as shooting games, which led to the establishment of fortnite. Fortnite's development has slowed down due to a number of problems, including the switch from virtual engine 3 to virtual engine 4, a deeper role-playing game approach (to extend the game's life), and the reason why art styles have changed from dark themes to more cartoon styles. In addition, epic also seeks to enter the game as a service model and invites Tencent, a Chinese publisher, to help. As part of that, Tencent's large stake in epic led to the departure of several executives, including key parts of the development of fortress. Fortnite's approach has been changed to epic's game as a service testing platform, further slowing development.

Finally, epic is ready to release fortnite in July 2017 as a pre paid experience game, and plans to release fortnite for free sometime in 2019, while getting feedback from players to improve the game. With the release of fortnite battle royal, the player against environment model is called "saving the world".

At the same time that epic released fortnite to the preemptive experience, player unknown's battlegrounds has become a global phenomenon, with 5 million copies sold in three months since its release in March 2017, which has aroused people's strong interest in the type of Royal escape. Epic realized that with the basic game of fortnite, they can also perform the big escape mode, and quickly developed their own version on top of fortnite in about two months. By September 2017, epic was ready to release the game in the second mode of "saving the world" in an earlier paid version, but later decided to release it in the free game fortnite Battle Royale supported by micro transaction. This version quickly won the praise of the players, attracted more than 10 million players in the first two weeks of release, and led epic to create an independent team to continue the development of fortnite battle royal. In addition to the "save the world" mode, it has not used common engine elements and art tool assets. This allows fortrite Battle Royale to extend to other platforms that are not supported in save the world mode, including IOS and Android mobile devices and Nintendo switches.