---
key: mechanic/horror-tension--t210
type: mechanic
id: horror-tension--t210
lang: en
title: Survival horror and limited defenses
summary: >-
  Limited defenses turn threatening encounters into choices between resistance,
  avoidance and spending a scarce reserve.
updatedAt: '2026-10-22'
status: active
url: 'https://gamemechanics.pro/en/knowledge/mechanic/horror-tension--t210/'
jsonUrl: >-
  https://gamemechanics.pro/api/v1/knowledge/en/mechanic/horror-tension--t210.json
markdownUrl: >-
  https://gamemechanics.pro/content/knowledge/en/mechanic/horror-tension--t210.md
aliases:
  - Limited means of defense
tags:
  - Horror and tension
  - Mechanics and variants
sourceIds:
  - source-b2a89cba190d4ef9
  - source-6669156765be17e4
sources:
  - id: source-b2a89cba190d4ef9
    title: 'Frictional Games: Amnesia'
    url: 'https://www.amnesiagame.com/'
    verifiedAt: null
  - id: source-6669156765be17e4
    title: Resident Evil 4 (2023)
    url: 'https://gamemechanics.org/patterns/tetris-inventory'
    verifiedAt: null
relations: []
placements:
  - catalogId: horror-tension
    id: t210
    title: Horror and tension
    url: 'https://gamemechanics.pro/en/mechanics/horror-tension/#t210'
    categoryIds:
      - mechanics
supersededBy: []
attributes:
  preview:
    updatedAt: '2026-10-22'
    title: Limited means of defense
    description: >-
      Limited defenses turn threatening encounters into choices between
      resistance, avoidance and spending a scarce reserve.
    image:
      src: images/mechanics/combat-tetris-inventory.webp
      width: 1024
      height: 576
      game: Resident Evil 4 (2023)
      sourceUrl: 'https://gamemechanics.org/patterns/tetris-inventory'
      originalUrl: 'https://cdn.gamemechanics.org/resident_evil_4_remake_inventory.jpg'
      credit: Capcom; image via GameMechanics.org
      rights: >-
        Game imagery © its respective rights holders. Source host:
        GameMechanics.org. All rights reserved; excluded from the portal’s MIT
        and CC BY 4.0 licenses.
      caption: Different weapon shapes in Leon’s case
      alt: >-
        Weapons and supplies fill a gridded case in Resident Evil 4; a rifle
        occupies a long row with empty cells below.
      markers:
        - x: 57
          'y': 31
          label: A long weapon occupies a row of cells
        - x: 50
          'y': 54
          label: Empty cells for new items
      crop:
        x: 245
        'y': 68
        width: 515
        height: 370
    tips:
      - >-
        Show defensive reserves before a threat and preserve a meaningful way
        around it.
    examples:
      - title: Resident Evil 4 (2023)
        url: 'https://gamemechanics.org/patterns/tetris-inventory'
endsAt: null
provenance: >-
  Original bilingual editorial overviews authored for gamemechanics.pro on
  2026-10-20 and reviewed on 2026-10-21. Scenarios are hypothetical design
  examples; prototype checks describe work to perform, not completed playtests.
  Primary sources support the stated techniques and implementation context, not
  every proposed variant.
license: CC-BY-4.0
codeLicense: MIT
attribution: gamemechanics.pro contributors
catalogKey: catalog/horror-tension
---
# Survival horror and limited defenses

id: horror-tension--t210
type: mechanic
key: mechanic/horror-tension--t210
lang: en
status: active
url: https://gamemechanics.pro/en/knowledge/mechanic/horror-tension--t210/

Limited defenses turn threatening encounters into choices between resistance, avoidance and spending a scarce reserve.

## At a glance

![Weapons and supplies fill a gridded case in Resident Evil 4; a rifle occupies a long row with empty cells below.](https://gamemechanics.pro/images/mechanics/combat-tetris-inventory.webp)

[Resident Evil 4 (2023)](https://gamemechanics.org/patterns/tetris-inventory) · Game imagery © its respective rights holders. Source host: GameMechanics.org. All rights reserved; excluded from the portal’s MIT and CC BY 4.0 licenses.

1. A long weapon occupies a row of cells
2. Empty cells for new items

- Show defensive reserves before a threat and preserve a meaningful way around it.

- [Resident Evil 4 (2023)](https://gamemechanics.org/patterns/tetris-inventory)

## How it works

Limited defenses turn threatening encounters into choices between resistance, avoidance and spending a scarce reserve.

## Variants

### Mechanic variants

<a id="t210-variants"></a>

- Ammunition limits direct confrontations. <a id="t210-v1"></a>
- Gunfire noise attracts additional threats. <a id="t210-v2"></a>
- Consumables create a brief safety window. <a id="t210-v3"></a>
- Injuries reduce options for subsequent escape. <a id="t210-v4"></a>

## Design example

The last round clears a passage but attracts an opponent from another wing.

Prototype check: Test completion with the minimum viable supplies, including avoidance of optional combat.

## Context and limits

Horror builds decisions around limited certainty, defensive means and safe recovery time. Each overview separates player actions, state changes and alternative rules. Examples are hypothetical design scenarios, not claims about a named game. A prototype check states an observable question for the next iteration. Existing detailed references remain separately linked from the direction map.

## Connected materials


## Sources and provenance

Original bilingual editorial overviews authored for gamemechanics.pro on 2026-10-20 and reviewed on 2026-10-21. Scenarios are hypothetical design examples; prototype checks describe work to perform, not completed playtests. Primary sources support the stated techniques and implementation context, not every proposed variant.

- [Frictional Games: Amnesia](https://www.amnesiagame.com/) (id: source-b2a89cba190d4ef9)
- [Resident Evil 4 (2023)](https://gamemechanics.org/patterns/tetris-inventory) (id: source-6669156765be17e4)

CC-BY-4.0 · gamemechanics.pro contributors