The Thirteenth Bell

The Thirteenth Bell browser game screenshot

The Thirteenth Bell

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Runs on halloween-rive.vercel.app.

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About The Thirteenth Bell

An atmospheric stealth horror puzzle game. Evade wandering watchers and decipher cryptic locks before the bell tolls thirteen. Desktop only.

In this atmospheric stealth-horror puzzle adventure, you must explore a cursed gothic cathedral cloaked in encroaching darkness. Wandering spectral inquisitors and mechanical gargoyles patrol the cloisters, reacting to footstep vibrations and open doorways.

Stay submerged in deep shadows, study patrol routes, and decode cryptic astrological dials to unlock the bell tower sanctuary. You must ring each sanctuary bell in sequence before the cursed clock strikes the dreaded thirteenth chime.

How The Thirteenth Bell was made with AI

The Thirteenth Bell was designed by moderntwelve for the Rive Halloween Challenge, utilizing Rive CLI to orchestrate complex skeletal character rigs, dynamic shadow clipping masks, and procedural sound triggers within the browser canvas.

Made by moderntwelve (@moderntwelve).

How to play

A desktop browser with keyboard input. The developer explicitly tuned the stealth timings and lighting for desktop screens.

The Thirteenth Bell controls
WASD / ArrowsMove quietly through corridors
Shift (hold)Sneak softly in shadows
E / SpaceInspect locks, dials and bell ropes
RReset puzzle room

Quick facts

  • Crafted with Rive CLI for the 2026 Rive Halloween Challenge
  • Gothic horror atmosphere with rich vector lighting and shadow casting
  • Stealth puzzle mechanics with sound and line-of-sight detection
  • Desktop-first control scheme and precision puzzle interactions

Questions about The Thirteenth Bell

What is the objective in The Thirteenth Bell?

Sneak through a cursed cathedral, avoid spectral watchers, solve lock puzzles, and ring the sanctuary bells before thirteen tolls.

Can I play on mobile?

The developer designed it primarily for desktop keyboards due to precision stealth timings and interaction shortcuts.

Who made the game?

Moderntwelve created it with Rive CLI for the 2026 Rive Halloween Challenge.

Tips for The Thirteenth Bell

  • Crouch and stay submerged in deep shadows when sentries walk past.
  • Study the astrological carvings on the cloisters to deduce the bell ringing order.

Sources: halloween-rive.vercel.app, x.com. Last checked .

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