The entry period has been extended. Watch any of these GDC streams to receive the free content and be entered into the drawings.
Aug 21st 9pm CEST/3pm ET/12pm PT
Aug 22nd & 23rd 3pm CEST/9am ET/6am PT
Aug 24th & 25th 12pm CEST/6am ET/3am PT
Free DLC is for Halo Wars 2, World of Tanks, and Battle Island: Commanders.
They are also giving away subscriptions to Xbox Game Pass, Editions of ReCore Definitive Edition, an Assassin's Creed Origins Collector's Edition, custom controller codes at Xbox design lab, and a limited edition Minecraft Xbox One S console to random people watching the stream.
is offering free dlc (unannounced what it is until the show goes live) for watching the Gamescom briefing live with your Microsoft ID connected account.
From the blogpost: https://blog.mixer.com/mixer-gamescom-2017/
Watch the Xbox @ Gamescom Live stream [mixer.com]
on Mixer: The event will be broadcast on Sunday, the 20th of August at 12:00pm PDT/ 3:00pm EST/ 9:00pm CEST
, and reminder you can find all the details for the Xbox live stream above. Make sure you're watching via the Mixer viewing app on Xbox One, any web browser at Mixer.com/Xbox, or by using the Mixer app on iOS [apple.com]
or Android [google.com]
•Sign in to Mixer using your Microsoft account: You must be logged into Mixer with your Microsoft account to get your Xbox Gamescom MixPot.*
•Link your Mixer account to your Microsoft/Xbox Live account: To learn how to link your Mixer account to your Microsoft/Xbox Live account, see Link a Mixer account to your Microsoft account. Be sure it's linked before the show starts!*
Microsoft support page [xbox.com]
on connecting your Microsoft/Xbox account to a Mixer account. Thanks ibnuts
It is not the ChannelOne stream. The channel to watch is the Xbox stream. www.mixer.com/xbox