Thirteen Case Files is a free browser detective puzzle. Click through police reports and personal files, then protect one person from the serial killer or arrest a suspect - only one action per day. About ~10 KB, no install, no account.
Want a timed maze roll instead? Try Rollermaze. Want clock-chain timing? Try Thirteen Hours.
Review daily police reports and suspect files, then protect a potential victim or arrest a suspect - one choice per day. Adapted from Marcin Walczak's js13k entry (MIT). About ~10 KB.
Click or touch to interact on a 320x240 canvas. Session-only - no save data in this build.
Thirteen Case Files is a free browser detective puzzle - read daily police reports, inspect suspect files, then protect a potential victim or arrest a suspect; one choice per day, ~10 KB, no install, no account.
The case
You investigate a serial killer whose crimes are tied to the number 13. Each in-game day brings fresh police reports and suspect files to weigh before you commit to a single, irreversible call.
Controls and loading
- Press Play to load the canvas game in a same-origin iframe; it downloads in seconds and runs entirely in your browser.
- Read the reports and inspect each suspect's file on a 320x240 canvas.
- Click or touch to interact - no keyboard needed, so it plays on phones and tablets.
- The build is session-only, so your progress resets each time you reload.
Privacy
Only the initial page and the game files load from this site, and nothing about your play is sent anywhere.
Frequently Asked Questions
What does Thirteen Case Files do?
You review police reports and suspect files for a serial killer case tied to the number 13. Each day you choose to protect one potential victim or arrest one suspect - one action only. The daily-choice structure is adapted from Marcin Walczak's js13k entry (MIT license).
Is anything saved when I play?
No. This build has no localStorage saves. Your progress resets when you close or reload the page. Everything runs in your browser from a ~10 KB download; nothing is sent back to any server.
How do I play?
Press Play to load the canvas game in the same-origin iframe. Read each document, then click the action buttons to protect a potential victim or arrest a suspect. You get one choice per day in the game timeline.
How big is the download?
About ~10 KB total for the game HTML, JavaScript, and CSS. It loads in seconds on any connection. The browser caches it so repeat visits are instant.
Can I play on a phone?
Yes. The game is primarily click and touch based - you tap documents to read them and tap action buttons to make choices. No keyboard required, so it works on mobile browsers.
Is the source code open?
Yes. The original entry is Marcin Walczak's js13k game under the MIT license. This site build adds a same-origin iframe wrapper and a noindex attribute on the frame; see LICENSE next to the engine files.