Floor Thirteen Horror

Floor Thirteen Horror is a free stealth horror game that runs in this browser tab. Press Play, walk the 13th floor with WASD, sweep the dark rooms with the F flashlight, and carry each key to the numbered room it opens until the last one lets you into Room 1313 - all without letting It catch you.

The controls in full

Keys chain from one numbered room to the next

Every run of Floor Thirteen Horror starts with a single key. Take it to the room whose number matches, search inside for the next key, then repeat the chain further into the floor until the final key opens Room 1313. A few rooms start unlocked with a health pack sitting inside instead; pick it up to restore health before pushing further into the floor.

Hiding beats fighting

This is not a Quake-style first-person shooter - there is no weapon or combat system, so survival comes from stealth and hiding rather than fighting back. It carries a light of its own, and that glow reaching a doorway ahead of It is the warning to break line of sight and move somewhere else. Press E or left-click to work doors and pick up items while you keep your distance.

What loads when you press Play

The game arrives as a compact single-file WebGL bundle of about 17 KB, injected into an iframe on this page, with zero CDN calls once it is running. A fullscreen launcher button sits on the page for a bigger, distraction-free view, and mouse-look works with the pointer locked inside the iframe instead of dragging the cursor off the edge. There is no save file and no account - progress is not kept between visits, so every Play starts back at the first key with a fresh run of the floor. Adapted from js13kGames/13th-floor (MIT).

How it differs from the other games here

This is a stealth exploration game, not a step-limited grid puzzle like Thirteen Step Escape or a shooting-focused survivor like Inferno Soul Walker - pick whichever matches the kind of tension you want, or browse the rest of the browser games.