You now have more time to try out the Doom demo, if you haven’t already.
Free Doom demo has been extended
The demo was supposed to be available only during the same week, but Bethesda revealed that it’s being extended. This demo is available on PC, PlayStation 4, and Xbox One.
— DOOM (@DOOM) June 20, 2016
The full first level of the single-player campaign is included. If you follow this link, it’ll take you the download pages for your preferred platform.
Bethesda did not say how long the demo will be available for, so grab it while you still can.