Epic Games has announced that its Battle Royale game, Fortnite, will be updated to support "cross-play, cross-progression, and cross-purchase" between the Xbox One, PC, Mac, and iOS versions of the game. Furthermore, support for these features will be added to the Android versions "in the next few months."

"Contrary to what may have been implied, Microsoft has long been a leading voice in supporting cross-platform play, connecting players across PC, mobile and all consoles," reads a post on the Epic Games website. "We've been working together with them over the last several months to make this possible, and will bring this functionality to Fortnite players on Xbox right along with other platforms."

It continues: "With each new platform we support and every update we ship, we strive to bring Fortnite to more people, and make it easier to play together with friends. And, as always, cross-play is opt in."

Fortnite has been available on Xbox One and PC for some time now, but mobile versions of Fortnite were announced on March 10. According to Epic, Fortnite mobile is “the same 100-player game you know from Xbox One, PlayStation 4, PC, and Mac" with the "same gameplay, same map, same content, same weekly updates.”

The announcement follows previous confirmation that, thanks to a partnership with Sony, Fortnite will support cross-play and cross-progression between PS4, PC, Mac, iOS, and (eventually) Android. Sign-ups for Fortnite's mobile version will open on March 12 and there will be an invite-only test on iOS and Android "in the next few months."

Those that are selected to participate will receive an invite by email shortly after signing up. More invites will be sent out over the coming months, so if you don't get in right away, there will be more opportunities later. If you do get in, you'll also get codes to share with friends.

PUBG, which is considered as the main inspiration for Fortnite: Battle Royale, also has a mobile edition--but it's only available in China and it does not support cross-play. PUBG is also not available on PS4, which could explain Sony's apparent eagerness to partner with Epic for Fortnite: Battle Royale.

Although the Xbox One and PS4 versions of Fortnite can't currently connect, we do know it is possible. In fact, it happened for a weekend, but the functionality was turned off and chalked up to an error.

Fortnite has gained ground on PUBG in a big way recently, which could spell trouble for the latter. Check out the video above to see GameSpot's Mike Mahardy, Michael Higham, Nick Margherita, and Jake Dekker discuss the current state of PUBG and whether it needs to evolve to stay competitive with Fortnite.