Mystery game coming to Xbox Game Pass tomorrow

With Ori and the Blind Forest and Shadow Warrior 2 comes a game from the "mysterious shadows", prompting speculation.

Xbox Game Pass gets a whole lot more fun tomorrow as both Ori and the Blind Forest and Shadow Warrior 2 get added to the service, although it turns out there will be a third addition as well, as the official Twitter account for the service announced late yesterday:

"Unbeknownst to many, this Thursday a mysterious new game will emerge mysteriously from the mysterious shadows from whence it came. Also Ori and the Blind Forest + Shadow Warrior 2 arrive."

We suspect the wording with "shadows" might be a clue, and three reasonable guesses would be either Shadow of the Tomb Raider or Middle-earth: Shadow of Mordor - based on their titles - or more likely Darksiders III, which was added to Origin Access Premium yesterday. Of course, it could be something unannounced as well.

What could it be?