Fortnite - a timed exclusive on Samsung android devices
Fortnite Android Beta is available for the Samsung smartphone users as revealed by Samsung and Epic. Android users who are not using a Samsung smartphone or tablet can join the beta "in the next few days.”
Owners of Samsung Galaxy: S7 / S7 Edge , S8 / S8+, S9 / S9+, Note 8, Note 9, Tab S3, or Tab S4 can start playing today and new Samsung Note 9 or Galaxy Tab S4 users will get access to the new Galaxy outfit.
Both cross play and cross progression are "fully supported," so you can grind on the train and pick up where you left off on your PC or console as revealed by Epic.
You can sign up for Fortnite Beta access at the official Fortnite site if you are an android user.