While the game's development started in Unreal Engine, Blizzard switched to its in-house Synapse engine, which was originally created for mobile games.
The Xbox and PC exclusive may come to the rival platform after its initial launch.
Perhaps don't count Microsoft out of the console game just yet.
The early-in-development project was reportedly a live-service title.
The ultimate assassin becomes the ultimate lifeform.
This follows news this week that Xbox had shuttered four Bethesda studios.
Reports have indicated the company has been mulling over the idea of whether or not to launch this year's Call of Duty on the subscription service.
The upcoming live-action film reportedly has its director.
Turtle Rock Studios might be developing Back 4 Blood 2, a sequel to 2021's cooperative shooter game inspired by Left 4 Dead.