Fortnite developer Epic Games has announced that it will bring Fortnite Battle Royale, the incredibly popular free multiplayer game, to iOS and Android devices through Polygon.
The port is reaching phones and tablets, and Epic Games promises that "it will be the same game of 100 players you know of PlayStation 4, Xbox One, PC and Mac", with the same gameplay, content, maps and weekly updates as the console and the PC versions. Users will be able to register for an iOS beta version starting March 12, and invitations will be launched soon after. Players who receive an invitation will also receive several invitations to send to their friends as well. Android support is planned for later in the coming months.
Fortnite Battle Royale on mobile devices will support cross-play and cross-progression between PlayStation 4, PC, Mac, iOS and, finally, Android versions of the game, which means you can play with and against players from other platforms, and that you can make team with friends on all devices.
Notably missing from that list is the Xbox One, which seems to be out of multiplatform fun. The Epic Games blog post mentions that the multiplatform feature is "in association with our Sony friends", which may explain Microsoft's rebuff here. On a purely technical level, we already know that the crossed game between the Xbox One and PS4 consoles in Fortnite is completely possible, since that same thing happened last year for a few hours due to a "configuration problem".
The Xbox One is not included for multiplatform games
Sony has also repeatedly rejected Microsoft's proposals for the multiplatform game between Xbox One and PlayStation devices in the past, claiming that last year at E3 it would not be willing to activate the cross-platform game for games like Minecraft and Rocket League because of concern for the safety of younger players on their platform.