This is a deal that’s happening right now at the Microsoft store. You get a free game and a $50 gift card to use in said store if you buy any of the following Xbox One bundles: The Name Your Game Bundle, the Minecraft Favorites Bundle or the Gears of War 4 Bundle. The last two are for the Xbox One S, while Name Your Game includes the original system.
The free games you can choose to get are Watch Dogs, The Crew, Just Dance: Disney Party 2 and Just Dance 2016. The $50 gift card can be used online or in person.