---
key: mechanic/game-mechanics--gm-crawling-under-floors
type: mechanic
id: game-mechanics--gm-crawling-under-floors
lang: en
title: Crawling under floors
summary: >-
  Space beneath the main floor becomes a concealed route. Its low ceiling
  restricts posture, visibility and equipment use.
updatedAt: '2026-10-21'
status: active
url: >-
  https://gamemechanics.pro/en/knowledge/mechanic/game-mechanics--gm-crawling-under-floors/
jsonUrl: >-
  https://gamemechanics.pro/api/v1/knowledge/en/mechanic/game-mechanics--gm-crawling-under-floors.json
markdownUrl: >-
  https://gamemechanics.pro/content/knowledge/en/mechanic/game-mechanics--gm-crawling-under-floors.md
aliases:
  - Crawling under a floor
tags:
  - Game design techniques
  - Movement
sourceIds:
  - source-0c6f56acf1e7bfd3
  - source-aacb2375364e07b5
sources:
  - id: source-0c6f56acf1e7bfd3
    title: 'Game Mechanics: Crawling under floors'
    url: 'https://gamemechanics.org/patterns/crawling-under-floors'
    verifiedAt: null
  - id: source-aacb2375364e07b5
    title: Doom 3 (2004)
    url: 'https://gamemechanics.org/patterns/crawling-under-floors/game/doom-3'
    verifiedAt: null
relations: []
placements:
  - catalogId: game-mechanics
    id: gm-crawling-under-floors
    title: Game design techniques
    url: >-
      https://gamemechanics.pro/en/mechanics/game-mechanics/#gm-crawling-under-floors
    categoryIds:
      - gm-category-movement
supersededBy: []
attributes:
  preview:
    updatedAt: '2026-10-21'
    title: Crawling under a floor
    description: >-
      Space beneath the main floor becomes a concealed route. Its low ceiling
      restricts posture, visibility and equipment use.
    image:
      src: images/mechanics/traversal-crawling-under-floors.webp
      width: 598
      height: 332
      game: Doom 3 (2004)
      sourceUrl: 'https://gamemechanics.org/patterns/crawling-under-floors'
      originalUrl: 'https://cdn.gamemechanics.org/webm/doom_3_under_floor.webm'
      sourceFrameSeconds: 12.41
      credit: id Software; clip via GameMechanics.org
      rights: >-
        © respective game rights holders. Clip source: GameMechanics.org. All
        rights reserved.
      caption: A grated floor above the concealed passage
      alt: >-
        Doom 3: a flashlight illuminates the grated main floor overhead while
        the player occupies the service space below.
      markers:
        - x: 52
          'y': 45
          label: The main floor is visible overhead
    tips:
      - Give the concealed route a recognizable entrance and exit.
      - Ensure camera restrictions do not hide a necessary turn.
    examples:
      - title: Doom 3 (2004)
        url: 'https://gamemechanics.org/patterns/crawling-under-floors'
endsAt: null
provenance: >-
  Editorial reference index based on the 199 public Game Mechanics pattern pages
  checked on 2026-10-20. Original concise RU/EN definitions by
  gamemechanics.pro; pattern names, category associations and game-reference
  URLs retained from gamemechanics.org. The source gallery includes a film
  analogy. Linked materials retain their original rights; references are
  upstream attributions, not independent verification.
license: CC-BY-4.0
codeLicense: MIT
attribution: gamemechanics.pro contributors
catalogKey: catalog/game-mechanics
---
# Crawling under floors

id: game-mechanics--gm-crawling-under-floors
type: mechanic
key: mechanic/game-mechanics--gm-crawling-under-floors
lang: en
status: active
url: https://gamemechanics.pro/en/knowledge/mechanic/game-mechanics--gm-crawling-under-floors/

Space beneath the main floor becomes a concealed route. Its low ceiling restricts posture, visibility and equipment use.

## At a glance

![Doom 3: a flashlight illuminates the grated main floor overhead while the player occupies the service space below.](https://gamemechanics.pro/images/mechanics/traversal-crawling-under-floors.webp)

[Doom 3 (2004)](https://gamemechanics.org/patterns/crawling-under-floors) · © respective game rights holders. Clip source: GameMechanics.org. All rights reserved.

[Source recording](https://cdn.gamemechanics.org/webm/doom_3_under_floor.webm), 12.41 s

1. The main floor is visible overhead

- Give the concealed route a recognizable entrance and exit.
- Ensure camera restrictions do not hide a necessary turn.

- [Doom 3 (2004)](https://gamemechanics.org/patterns/crawling-under-floors)

## How it works

A low passage beneath flooring provides a traversal route.

## Variants

### How the technique works

<a id="gm-crawling-under-floors-rule"></a>

- A low passage beneath flooring provides a traversal route. <a id="gm-crawling-under-floors-definition"></a>

## Context and limits

All 199 Game Mechanics entries at the check date: player actions, systems, presentation techniques and contested patterns. Entries are grouped by their first source-card category; all categories appear in their descriptions. Definitions use original wording. References link to game-specific galleries; images and videos remain at the source.

## Connected materials


## Sources and provenance

Editorial reference index based on the 199 public Game Mechanics pattern pages checked on 2026-10-20. Original concise RU/EN definitions by gamemechanics.pro; pattern names, category associations and game-reference URLs retained from gamemechanics.org. The source gallery includes a film analogy. Linked materials retain their original rights; references are upstream attributions, not independent verification.

- [Game Mechanics: Crawling under floors](https://gamemechanics.org/patterns/crawling-under-floors) (id: source-0c6f56acf1e7bfd3)
- [Doom 3 (2004)](https://gamemechanics.org/patterns/crawling-under-floors/game/doom-3) (id: source-aacb2375364e07b5)

CC-BY-4.0 · gamemechanics.pro contributors