In October, Twitch reached a viewership of 1.8 billion hours, according to StreamElements and Rainmaker.gg's monthly State of the Stream report.
Twitch still hasn't reached January's monthly viewership of over 2 billion hours watched.
Meanwhile, Facebook Gaming hours hit 342 million hours within the month, recovering from a September slump of 328 million.
source https://www.gamesindustry.biz/twitch-pulls-in-18bn-viewships-hours-in-october
