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Ritual Catacombs is a first-person WebGL horror game in the browser: walk cursed tunnels, gather glowing shards to open runic doors, and fight black cats, wraiths, and stone turret idols. About ~94 KB after Play, no install, no account.

Want stealth instead of combat? Try Floor Thirteen Horror.

RITUAL CATACOMBS

Explore cursed catacombs, collect shards, and survive the ritual of nine lives. From cat-shooter by Dmytro Kozhukhar (MIT, JS13K 2025). About ~94 KB downloads once when you press Play.

Click Play, then click inside the game frame to capture the mouse. WASD to move, left click to shoot, right mouse to strafe. Esc releases the cursor. Best on desktop with keyboard and mouse.

Press Play to load the game.
No save data - each run starts fresh in the catacombs.

Ritual Catacombs is a free browser WebGL horror game - explore tile-based catacombs with WASD and mouse aim, collect shards to open doors, dodge turret idols, and defeat the nine-lived boss; ~94 KB, no install, no account.

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Press Play to load the roughly 94 KB single-file engine in a same-origin iframe, then click inside the frame to lock the pointer. Nothing leaves your device beyond that initial page and the game files served from this site.

How to play

  • Move with WASD and aim with the mouse once the pointer is locked; press Esc to release the cursor.
  • Collect green shards to open runic doors, and grab cyan hearts to restore health.
  • Stone turret idols fire magenta orbs - dodge them or shoot them down.
  • Black cats charge when their eyes flare red; white wraiths punish you for staring too long.
  • The boss avatar has nine lives - shoot its glowing eyes to banish it and win.

Sound and privacy

Ambience and gunfire are generated procedurally through Web Audio, so no external audio files are fetched. Progress is session-only with checkpoint respawn - there is no account, no install, and nothing is saved off your device.

For more free browser games, open the games hub. Prefer stealth horror? Try Floor Thirteen Horror.

See all Back to Games →

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Tags: #games

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Frequently Asked Questions

What is Ritual Catacombs?

A first-person WebGL horror game in cursed catacombs. Collect green shards to open runic doors, heal with cyan hearts, and survive enemies until you banish the nine-life boss.

How do I control it?

WASD to move, mouse to look (click inside the frame to lock the pointer), left click to shoot, right mouse button to strafe. Esc releases the cursor. Bracket keys adjust mouse sensitivity.

Is progress saved?

No. The engine does not use localStorage or accounts. Each session starts at level one unless you respawn after death at the last checkpoint door.

How big is the download?

About ~94 KB of inlined HTML and WebGL JavaScript after you press Play. The browser caches it for later visits on the same device.

Does it work on a phone?

The game expects keyboard and mouse with pointer lock. It may load on tablets but is designed for desktop play.

Is this open source?

Yes. Adapted from cat-shooter by Dmytro Kozhukhar (dkozhukhar/cat-shooter) under the MIT license. This site build adds noindex on the iframe and ships LICENSE next to the engine.