The reboot of Doom has been well received by fans and critics alike, but publisher Bethesda reckons there are more potential converts to the world of blood and guts.
As such, it was announced at E3 that the first level of Doom is available free for Xbox One, PS4 and on the Steam store this week.
However, whereas the shareware discs were forever, those seeking to give Doom a try will only be able to do so until the end of the week.
Related: Doom 2016 review
During E3, Bethesda also promised new maps and multiplayer modes including the old favourite, the deathmatch, in forthcoming DLC releases.
If all of this has you hankering for the original, then check out the Doom 4 Doom project. A group of models decided to build the new game with the old graphics and the results are actually not that bad!
Doom 2016 video review