---
key: mechanic/metroidvania--family-group-16
type: mechanic
id: metroidvania--family-group-16
lang: en
title: 'Health, energy and the price of action'
summary: >-
  Health and energy limit available actions, healing and exploration between
  safe points.
updatedAt: '2026-10-22'
status: active
url: 'https://gamemechanics.pro/en/knowledge/mechanic/metroidvania--family-group-16/'
jsonUrl: >-
  https://gamemechanics.pro/api/v1/knowledge/en/mechanic/metroidvania--family-group-16.json
markdownUrl: >-
  https://gamemechanics.pro/content/knowledge/en/mechanic/metroidvania--family-group-16.md
aliases: []
tags:
  - Metroidvanias
  - Systems
sourceIds:
  - source-bac22fc4230e6976
sources:
  - id: source-bac22fc4230e6976
    title: Hollow Knight
    url: 'https://store.steampowered.com/app/367520/'
    verifiedAt: null
relations: []
placements:
  - catalogId: metroidvania
    id: family-group-16
    title: Metroidvanias
    url: 'https://gamemechanics.pro/en/mechanics/metroidvania/#family-group-16'
    categoryIds:
      - section-4
supersededBy: []
attributes:
  preview:
    updatedAt: '2026-10-22'
    title: 'Health, energy and the price of action'
    description: >-
      Health and energy limit available actions, healing and exploration between
      safe points.
    image:
      src: images/mechanics/systems-hollow-knight-extra-00.webp
      width: 1440
      height: 810
      game: Hollow Knight
      sourceUrl: 'https://store.steampowered.com/app/367520/'
      originalUrl: >-
        https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/367520/ss_5384f9f8b96a0b9934b2bc35a4058376211636d2.1920x1080.jpg?t=1776125684
      credit: Team Cherry / Team Cherry
      rights: © Team Cherry / Team Cherry. All rights reserved.
      caption: Health masks and the Soul vessel in the screen corner
      alt: Health masks and the Soul vessel in the screen corner
      markers:
        - x: 15
          'y': 10
          label: Health and Soul impose different constraints on the hero
    tips:
      - Show an action’s cost before its resource is spent.
    examples:
      - title: Hollow Knight
        url: 'https://store.steampowered.com/app/367520/'
endsAt: null
provenance: >-
  Original editorial design catalog consolidated from project discussions on
  2026-10-20. Complete discussion item lists and contextual limitations are
  preserved; linked primary sources support specific techniques, not the entire
  classification. English translation was prepared with machine assistance and
  editorial review.
license: CC-BY-4.0
codeLicense: MIT
attribution: gamemechanics.pro contributors
catalogKey: catalog/metroidvania
---
# Health, energy and the price of action

id: metroidvania--family-group-16
type: mechanic
key: mechanic/metroidvania--family-group-16
lang: en
status: active
url: https://gamemechanics.pro/en/knowledge/mechanic/metroidvania--family-group-16/

Health and energy limit available actions, healing and exploration between safe points.

## At a glance

![Health masks and the Soul vessel in the screen corner](https://gamemechanics.pro/images/mechanics/systems-hollow-knight-extra-00.webp)

[Hollow Knight](https://store.steampowered.com/app/367520/) · © Team Cherry / Team Cherry. All rights reserved.

1. Health and Soul impose different constraints on the hero

- Show an action’s cost before its resource is spent.

- [Hollow Knight](https://store.steampowered.com/app/367520/)

## How it works

Health and energy reserves limit the available actions and duration of exploration.

## Variants

### Variants and applications

<a id="family-group-16-variants"></a>

- Health and treatment. Rule: Damage brings defeat closer, and recovery requires a resource, time or position. <a id="variant-mv-175"></a>
- Shared resource for healing and attacking. Rule: Survival costs reduce the availability of offensive abilities. <a id="variant-mv-176"></a>
- Restoring resources through combat. Rule: Hitting, killing, or taking risks will return energy and health. <a id="variant-mv-177"></a>
- Focusing treatment. Rule: Recovery requires immobility or a sufficiently long safe window. <a id="variant-mv-178"></a>
- Endurance. Rule: Attacks, defenses and movement compete for the restored reserve. <a id="variant-mv-179"></a>
- Limited charges and consumables. Rule: The number of uses is limited until replenishment or rest. <a id="variant-mv-180"></a>
- Overcharging and overheating. Rule: Repeated action is limited by time or accumulation of load. <a id="variant-mv-181"></a>
- Temporary enhancement. Rule: A limited duration effect changes the power, defense, or availability of actions. <a id="variant-mv-182"></a>
- Temporary and restored health. Rule: Part of the defense lasts until it is lost or allows return with a counter attack. <a id="variant-mv-183"></a>
- Trading health for strength. Rule: Action expends health or increases risk for benefit. <a id="variant-mv-184"></a>
- Risk until the next shelter. Rule: Limited supplies force the assessment of continued exploration and return... <a id="variant-mv-185"></a>

## Context and limits

The author's working taxonomy of mechanics, access rules, structural patterns and support systems. This is not an industry standard or a statement that every item is required or present in every game. Hybrids and support are highlighted separately. Any finite list is limited by the level of detail; combinations and new options remain open.

## Connected materials


## Sources and provenance

Original editorial design catalog consolidated from project discussions on 2026-10-20. Complete discussion item lists and contextual limitations are preserved; linked primary sources support specific techniques, not the entire classification. English translation was prepared with machine assistance and editorial review.

- [Hollow Knight](https://store.steampowered.com/app/367520/) (id: source-bac22fc4230e6976)

CC-BY-4.0 · gamemechanics.pro contributors