Thanks to the highly competitive nature of the video games industry, it’s common for publishers to use any means necessary when it comes to getting sales. In the case of most modern AAA releases, this means shelling out a ton of money on marketing in order to build up high levels of pre-release hype.
Sadly, there have also been many instances in which publishers have been caught lying about the content of their releases, or at least twisting the truth beyond recognition. Promising features might be advertised, only to never see the light of day. The scope of the game might be blown horrifically out of proportion, with audiences only realising how limited it is after playing themselves.