The premise is one sentence long and does not improve on inspection: the elevator only goes down. There is no up button. There has never been an up button. Whatever floor you are on, the only thing the lift will accept is deeper, and it will refuse to move at all until you have done what it asked for on this one.

The loop is deliberately unglamorous. You arrive, you read the objective printed under the floor label, and then you go out into a corridor that is genuinely dark — the flashlight is a cone with a battery that drains, not a lighting preset. You sweep rooms, loot keys and batteries, open what the keys open, flip the light switches that work, finish the task, walk back to the cabin and close the doors. Close them early and the lift plays dead and spits you back out, which is the most elevator behaviour imaginable.

What makes it hold together is that the flashlight is the whole horror design. Nothing jumps at you from off screen because off screen is where everything already is. Battery charge is a resource and the inventory has a slot for spares, so the tension is arithmetic rather than theatrical: you know roughly how much dark you can afford, and the corridor is longer than that.

It saves as you go — run seed, floor, deepest floor, inventory, torch charge — and floors regenerate deterministically from that seed, so the building you are in is the same building when you come back. Objective progress resets with the floor on reload, which is the game quietly telling you not to close the tab in the middle of a task.

On a phone, press and drag anywhere and a floating joystick appears under your finger; push it to the rim to run. On a desktop it is WASD or arrows, Shift to run, Escape to pause. The big button at the bottom right is context-sensitive and the LIGHT button does what it says. Served over HTTPS it installs as a PWA, which means you can put an elevator that only goes down on your home screen, and we are not going to talk you out of it.