How to Play Ritual Catacombs - Step by Step
The Ritual Catacombs page loads a ~94 KB WebGL horror game in an iframe. Collect shards, open doors, and survive the boss. Press Play on this page to start.
Step 1 - press Play on this page
Press Play to inject the iframe (~94 KB). The WebGL canvas loads inside the frame. Upstream is dkozhukhar/cat-shooter (MIT, JS13K 2025 Director's Cut).
Step 2 - capture the mouse
Click inside the game frame so pointer lock engages. Move the mouse to look around the catacombs. Press Esc to release the cursor.
Step 3 - move and shoot
WASD walks the dungeon tiles. Hold right mouse to strafe. Left click fires hitscan shots with a short cooldown (~120 ms). Watch the crosshair pulse on each shot.
Step 4 - collect shards and open doors
Pick up green shards scattered in rooms. Runic doors stay sealed until you gather enough shards for that level. Cyan hearts restore HP when shot or collected.
Step 5 - read enemy tells
Black cats charge when their eyes flare red. White wraiths split into orbiting shadows if you stare too long. Stone turret idols shoot magenta orbs - dodge or destroy them.
Step 6 - banish the boss
The boss avatar has nine lives. When its eyes glow, shoot them to remove a life. After victory or defeat, wait 60 seconds then click to restart from the beginning or last checkpoint.
| Setting | Value | Notes |
|---|---|---|
| Download | ~94 KB | single inlined index.html |
| Input | WASD + mouse | pointer lock inside iframe |
| Saves | none | checkpoint respawn only |
| Render | WebGL2 | auto quality presets 640x480 down to 192x144 |
See when to play, comparisons, and Floor Thirteen Horror.
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