Tik Tok is arguably a Facebook killer.

Roblox is in some ways there, I think Epic thought fortnite could have competed. IMO they made a strategic mistake in shackling their game-as-a-platform to Fortnite. I thought the music fortnite thing looked interesting, but I have negative interest in installing Fortnite.

Call it something else and make it literally the first thing you see on epicgames.com, have it work on mobile, and maybe things would be different today.

(Aside: Roblox wins because I can go from typing in roblox.com into my browser and be playing a game with a friend in under 20s)