Fortnite Battle Royale is a free-to-play battle royale video game developed and published by Epic Games. It was released as an early access title for Microsoft Windows, macOS, PlayStation 4 and Xbox One in September 2017, for iOS in April 2018, and the Nintendo Switch in June 2018, with plans for an Android version later in mid-2018. It is a spin-off from Epic's Fortnite: Save the World, a cooperative survival game with construction elements. As a battle royale game, Fortnite Battle Royale features up to 100 players, alone, in duos, or in squads of up to four players, attempting to be the last player or group alive by killing other players or evading them, while staying within a constantly shrinking safe zone to prevent taking lethal damage from being outside it. Players start with no intrinsic advantages, and must scavenge for weapons and armor to gain the upper hand on their opponents. The game adds the construction element from Fortnite; players can break down most objects in the game world to gain resources they can use to build fortifications as part of their strategy. The game features limited cross-platform play between the platforms.