But Outlast isn't based on jumpscares, is it?
Yes it is. There are so many jumpscares combo'd with sudden orchestra that it isn't even funny. Both Outlast and Five Nights rely on tension. You know there's a looming threat, and you know you're going to stuff yourself if you allow that threat to reach you. The 'chase sequences' in Outlast are far from scary, because the only thing keeping you from a
sp00ky death is holding down 'W'. It might as well be a QTE. 'Least Five Nights gave you more buttons to press, but both games are as overrated as hell.