--- key: mechanic/game-mechanics--gm-blood-decals type: mechanic id: game-mechanics--gm-blood-decals lang: en title: Blood decals summary: >- A hit leaves a blood mark on a wall or floor. The mark preserves evidence of the event after immediate effects disappear. updatedAt: '2026-10-22' status: active url: >- https://gamemechanics.pro/en/knowledge/mechanic/game-mechanics--gm-blood-decals/ jsonUrl: >- https://gamemechanics.pro/api/v1/knowledge/en/mechanic/game-mechanics--gm-blood-decals.json markdownUrl: >- https://gamemechanics.pro/content/knowledge/en/mechanic/game-mechanics--gm-blood-decals.md aliases: [] tags: - Game design techniques - Visual feedback - Gunplay - Environmental traces - Blood - Satisfying sourceIds: - source-d54f4244c6567bb1 - source-6b4f0101e17f0220 - source-267b4f906c12b9fb - source-eb14201275747a19 - source-50f75a4c65dfa543 - source-5e512195bcac7898 sources: - id: source-d54f4244c6567bb1 title: 'Game Mechanics: Blood decals' url: 'https://gamemechanics.org/patterns/blood-decals' verifiedAt: null - id: source-6b4f0101e17f0220 title: Wolfenstein 3D (1992) url: 'https://gamemechanics.org/patterns/blood-decals/game/wolfenstein-3d' verifiedAt: null - id: source-267b4f906c12b9fb title: Return to Castle Wolfenstein (2001) url: >- https://gamemechanics.org/patterns/blood-decals/game/return-to-castle-wolfenstein verifiedAt: null - id: source-eb14201275747a19 title: Doom 3 (2004) url: 'https://gamemechanics.org/patterns/blood-decals/game/doom-3' verifiedAt: null - id: source-50f75a4c65dfa543 title: Far Cry 5 (2018) url: 'https://gamemechanics.org/patterns/blood-decals/game/far-cry-5' verifiedAt: null - id: source-5e512195bcac7898 title: 'RoboCop: Rogue City (2023)' url: 'https://gamemechanics.org/patterns/blood-decals/game/robocop-rogue-city' verifiedAt: null relations: [] placements: - catalogId: game-mechanics id: gm-blood-decals title: Game design techniques url: 'https://gamemechanics.pro/en/mechanics/game-mechanics/#gm-blood-decals' categoryIds: - gm-category-gunplay - gm-category-blood - gm-category-satisfying - gm-category-environmental-traces - gm-category-visual-feedback supersededBy: [] attributes: preview: updatedAt: '2026-10-22' title: Blood decals description: >- A hit leaves a blood mark on a wall or floor. The mark preserves evidence of the event after immediate effects disappear. image: src: images/mechanics/interaction-blood-decals.webp width: 498 height: 276 game: Far Cry 5 sourceUrl: 'https://gamemechanics.org/patterns/blood-decals' originalUrl: 'https://cdn.gamemechanics.org/webm/far_cry_5_blood_decal.webm' sourceFrameSeconds: 2.68 credit: Ubisoft Montréal; frame from clip via GameMechanics.org rights: >- Game imagery © its respective rights holders. Source host: GameMechanics.org. Visible source watermarks preserved. All rights reserved; excluded from MIT and CC BY 4.0. caption: A mark remains on the wall behind the target alt: >- A blood mark remains on a shop’s pale wall after an enemy falls in Far Cry 5. markers: - x: 53 'y': 39 label: Persistent mark on the wall - x: 57 'y': 75 label: Position of the fallen enemy tips: - Limit decal count and lifetime to preserve scene readability. - Check attachment to moving and destructible surfaces. examples: - title: Far Cry 5 url: 'https://gamemechanics.org/patterns/blood-decals' 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 --- # Blood decals id: game-mechanics--gm-blood-decals type: mechanic key: mechanic/game-mechanics--gm-blood-decals lang: en status: active url: https://gamemechanics.pro/en/knowledge/mechanic/game-mechanics--gm-blood-decals/ A hit leaves a blood mark on a wall or floor. The mark preserves evidence of the event after immediate effects disappear. ## At a glance ![A blood mark remains on a shop’s pale wall after an enemy falls in Far Cry 5.](https://gamemechanics.pro/images/mechanics/interaction-blood-decals.webp) [Far Cry 5](https://gamemechanics.org/patterns/blood-decals) · Game imagery © its respective rights holders. Source host: GameMechanics.org. Visible source watermarks preserved. All rights reserved; excluded from MIT and CC BY 4.0. [Source recording](https://cdn.gamemechanics.org/webm/far_cry_5_blood_decal.webm), 2.68 s 1. Persistent mark on the wall 2. Position of the fallen enemy - Limit decal count and lifetime to preserve scene readability. - Check attachment to moving and destructible surfaces. - [Far Cry 5](https://gamemechanics.org/patterns/blood-decals) ## How it works Hits leave blood marks projected onto surrounding surfaces. ## Variants ### How the technique works - Hits leave blood marks projected onto surrounding surfaces. ## 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: Blood decals](https://gamemechanics.org/patterns/blood-decals) (id: source-d54f4244c6567bb1) - [Wolfenstein 3D (1992)](https://gamemechanics.org/patterns/blood-decals/game/wolfenstein-3d) (id: source-6b4f0101e17f0220) - [Return to Castle Wolfenstein (2001)](https://gamemechanics.org/patterns/blood-decals/game/return-to-castle-wolfenstein) (id: source-267b4f906c12b9fb) - [Doom 3 (2004)](https://gamemechanics.org/patterns/blood-decals/game/doom-3) (id: source-eb14201275747a19) - [Far Cry 5 (2018)](https://gamemechanics.org/patterns/blood-decals/game/far-cry-5) (id: source-50f75a4c65dfa543) - [RoboCop: Rogue City (2023)](https://gamemechanics.org/patterns/blood-decals/game/robocop-rogue-city) (id: source-5e512195bcac7898) CC-BY-4.0 · gamemechanics.pro contributors