Here's an odd one: the PC version of Metro Exodus is available to buy on the Microsoft Store - despite apparently being an Epic Games store exclusive.
Metro Exodus is available to buy to own, or to download as part of the Xbox Game Pass for PC, which launched today.
When publisher Deep Silver announced Metro Exodus would launch as an Epic Games store exclusive - much to the anger of the Steam community - it stated it would come to other platforms a year later, in February 2020.