13 floor is a free psychological-horror puzzle by Bamboos, drawn as 16-bit top-down pixel art. You play Adrian, a cleaner. The lift in an old apartment opens on a floor that should not be there. Floors change. Clues are hidden. Some locks are codes. The project is marked as a prototype, and the listing says graphics and sounds were AI assisted. There is no combat system in the notes. It runs in the browser on itch.io.
How a session of 13 floor starts
Walk with the arrows or WASD. E or Space talks and inspects. Esc cancels. The decisions are which room to enter and which scrap of paper to read before you try a code. The listing does not describe an inventory puzzle beyond those interactions, and it does not describe a map screen. Treat a changing floor as a new layout, not as a glitch you should refresh away, because shifting floors are the premise.
What you actually decide
Where to look, and when a code is worth attempting with the clues you already have. There is no class and no upgrade. A wrong code wastes time only if the game lets you retry, and the notes do not spell out a failure penalty. Explore first.
Controls and the first screen
Movement, interact, cancel. That is the whole printed set. Click the game so WASD does not scroll this page. The prototype label means a later build may add keys. This page will not invent them.
What the listing does not promise
Prototype, not a finished release and not explicitly a demo. Length and final scope are not published. Do not summarize an ending. The AI-assisted note covers graphics and sounds, and Bamboos is still the named author.
Where 13 floor runs
13 floor is published by Bamboos on itch.io. This directory does not host the build, does not re-upload it, and does not put the author’s files inside an iframe unless the author offers an allowlisted embed. Use the official link on this page. If a control, a price, or a version on itch.io disagrees with a sentence here, the author page wins. The browser build is on Bamboos’s itch.io page.
A first sitting
Ride the lift, step onto the floor that should not exist, and inspect every object in the first room before you hunt a code. If the layout changes when you leave, walk it again instead of assuming you memorized it. Stop when the prototype stops offering new clues.
Notes from the listing
On 13 floor, Adrian is a cleaner, and the extra floor is the hook. Treat that as something to try in the first sitting, not as a hidden system this page invented. Bamboos’s itch.io page is the place that can add or remove it. On 13 floor, floors change as you explore. Treat that as something to try in the first sitting, not as a hidden system this page invented. Bamboos’s itch.io page is the place that can add or remove it. On 13 floor, code puzzles sit alongside hidden clues. Treat that as something to try in the first sitting, not as a hidden system this page invented. Bamboos’s itch.io page is the place that can add or remove it. On 13 floor, the art is described as 16-bit top-down pixel art. Treat that as something to try in the first sitting, not as a hidden system this page invented. Bamboos’s itch.io page is the place that can add or remove it. On 13 floor, the project is a prototype and is listed as free. Treat that as something to try in the first sitting, not as a hidden system this page invented. Bamboos’s itch.io page is the place that can add or remove it. On 13 floor, graphics and sounds are marked AI assisted. Treat that as something to try in the first sitting, not as a hidden system this page invented. Bamboos’s itch.io page is the place that can add or remove it.
