This is the Surface Duo Xbox controller Microsoft should've made

[Windows Central]

The Surface Duo is awesome, but its gaming features never materialized.
When Microsoft debuted the Surface Duo, they did so with a tease of how it would (or rather, could) work with Xbox Game Pass Cloud Gaming, Project xCloud. The Duo would display gameplay on the top screen, and turn the lower display into a virtual gamepad. However, that functionality never actually materialized, for some reason.

Full story from the WindowsCentral blog...