But it's not that the Capcom devs have spent the past 20 years studying human psychology to deliver the perfect jump scare. They did something a lot more organic than that: They let Mr. X off the leash.
Mr. X isn't like other, lazy video game bosses who lounge around their perfectly staged volcano lairs waiting for a cutscene to trigger. Mr. X has shit to do and people to rip in half, so he's always out there looking for the player character. This was confirmed by YouTuber SheSez. While exploring the game with an out-of-bounds camera for his series Boundary Break, he noticed Mr. X still stomping around the place like an angry dad looking for the remote. That's because, like the clever xenomorph in the closet-hiding simulator Alien: Isolation, Mr. X is a dynamic villain. Or more appropriately, an ambient Michael Meyers. This unkillable, unstoppable force is always searching, listening, and ambling slowly toward you and your brittle spine.