DOOM Demo is now available for the Xbox One and users can now try the demo out for free on their Xbox. The game’s demo has been out for a little while now – however, Bethesda extended the demo’s availability, which means you can still download it if you haven’t done so yet.
— DOOM (@DOOM) June 20, 2016
Here’s an excerpt from the game’s description:
In the DOOM Demo, Fight Like Hell through the opening level of the first-person shooter’s single-player campaign. As the lone DOOM Marine, you’ll use impossibly destructive guns and fast, fluid movement to obliterate relentless demon hordes invading the UAC facility on Mars.