What I played of Fortnite in September, a good two hours, was super fun. I didn't want to stop.
Epic Games has offered sign-ups for an alpha build for quite some time and here we are, at last: the first wave of invites went out today to community members. Each invite can be extended to two people -- Fortnite is best played with friends -- so consider calling in a favor.
The alpha, which is being used to "veryify at a larger scale that the basic systems in the game function properly," runs from December 2 - 19. Additional invites are going out this week.