You're absolutely right, they aren't all PC games. We looked at lists of first party titles published by Microsoft Studios in the past on both PC and Xbox as well as titles that have been released by third parties as Xbox exclusives.

A big theme in our list is the need for Microsoft to get back to developing / publishing first party titles on PC to push innovation and re-establish their Windows PC game dominance.

Linux, Steam OS, Mac OS, Android, and iOS have taken a lot of the market share Microsoft previously dominated. It's very likely that to keep their position with Windows and DirectX as core PC gaming technologies they will need to bring some Xbox titles over to Windows.

Yeah! We finished our list last night and this afternoon they announced an HD update to Age of Mythology. It's probably inevitable that Age of Empires 3 will eventually get an HD remake too.

We'd still love to see Age of Empires 4 though.

We don't disagree with Halo or Gears of War. Neither of them are dead titles though, which is what our list tried to focus on. Lost Odyssey is a great choice too, good catch!

The Doom series isn't a Microsoft Studios title, nor an Xbox exclusive.

Whether you love tycoon or RTS games you have to admit the fact that Microsoft has made a lot of influential strategy titles.

But Those aren't PC Games (couple were on PC but not ALL). Lost Odyssey? There hasn't been a new in years. DOOM is not a Microsoft Property nor Xbox exclusive.