Resident Evil 7: Biohazard was released earlier this year (you can read our review here), and the official Resident Evil YouTube channel has released the first part of a Making Of documentary series regarding the game, in which developers talk about the development process as well as what didn't make the cut.
One of these features that didn't make the finished products was zombies that reacted to breathing, meaning you had to hold down a button to hold your breath and get past them undetected, and if you didn't manage to get past them before the breath gauge ran out, they'd find you and grab you. As if the game wasn't scary enough...
You can watch the full first part here. Is it more interesting seeing what wasn't included in the game, or seeing how what was included was developed?