You may have heard some things about the just-released Alien: Isolation. That it's terrifying and claustrophobic and pulse-pounding. Well, all of those things are true - but not for the reason you think.
No, it's not the Xenomorph that will terrify your character more than anything in the world. It's a locked door that will make her gasp in horror EVERY SINGLE TIME SHE APPROACHES IT.