During Microsoft's Xbox E3 stream, the company broadcast to their own platform, Mixer. There were prizes up for grabs for those that watched via that service, however the allure of free games proved too much for the youngling media service and many people were unable to log in.
It's good news though for anyone who missed out as the offer has been extended. There are a number of Xbox Daily Briefings still to come, and anybody watching those will also be able to earn free games and addons. All you need to do is log in, watch the streams, and you could be awarded any of the following:
Rare Replay – full game download. Mature game – will not be awarded to accounts with content restrictions.
Halo Wars 2 Kinsano Leader Pack (with special bonus of 3 Blitz Packs for Xbox One players)
Minecraft Redstone Specialists Skin Pack (for Minecraft: Xbox One Edition)
Halo Warthog in Forza Horizon 3 (unique vehicle not available in the in-game store)
HAWKEN – Starter Pack
No Time to Explain – full game download
The Final Station – full game download. Mature game – will not be awarded to accounts with content restrictions.
There are a few briefings left so there's still plenty of time to get your hands on some free goodies. If you don't have an account with mixer, or if you do but it isn't linked to your Microsoft account, then you will want to do that in advance to beat the rush at the start of each briefing. Full details are given in an FAQ on Microsoft's website.