I got this game a few months ago on another digital distribution service, and I was not disappointed. Its a fairly straightforward game with several different types of guns, most with alternative fire options, and hordes of undead monsters to slaughter your way through. It honestly evoked memories of playing Doom and Wolfenstein 3D (the originals) in the sense that you simply blast your way through as many enemies as possible. There are some secrets here and there and a generally decent over-arcing plot (which is just decent in my opinion) but if you want to just have fun through carnage, give this game a look. Its worth the ten dollars and the amount of fun you'll have playing it.