---
key: mechanic/metroidbrainia--family-04
type: mechanic
id: metroidbrainia--family-04
lang: en
title: Discovering physical and systemic rules
summary: >-
  Players infer a consistent rule governing forces or interactions and apply it
  to new problems.
updatedAt: '2026-10-22'
status: active
url: 'https://gamemechanics.pro/en/knowledge/mechanic/metroidbrainia--family-04/'
jsonUrl: >-
  https://gamemechanics.pro/api/v1/knowledge/en/mechanic/metroidbrainia--family-04.json
markdownUrl: >-
  https://gamemechanics.pro/content/knowledge/en/mechanic/metroidbrainia--family-04.md
aliases:
  - Discovering systemic rules
tags:
  - Metroidbrainia
  - Mechanics catalog
sourceIds:
  - source-ce656b8313634ee1
  - source-8a3a7e105b6c798e
sources:
  - id: source-ce656b8313634ee1
    title: Description of Draknek & Friends
    url: 'https://store.steampowered.com/app/1052990/A_Monsters_Expedition/'
    verifiedAt: null
  - id: source-8a3a7e105b6c798e
    title: Portal
    url: 'https://store.steampowered.com/app/400/'
    verifiedAt: null
relations: []
placements:
  - catalogId: metroidbrainia
    id: family-04
    title: Metroidbrainia
    url: 'https://gamemechanics.pro/en/mechanics/metroidbrainia/#family-04'
    categoryIds:
      - section-1
supersededBy: []
attributes:
  preview:
    updatedAt: '2026-10-22'
    title: Discovering systemic rules
    description: >-
      Players infer a consistent rule governing forces or interactions and apply
      it to new problems.
    image:
      src: images/mechanics/adventure-portal-04.webp
      width: 640
      height: 360
      game: Portal
      sourceUrl: 'https://store.steampowered.com/app/400/'
      originalUrl: >-
        https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/400/0000002586.1920x1080.jpg?t=1745368554
      credit: Valve
      rights: >-
        Game imagery © its respective rights holders. Publisher-distributed
        Steam screenshot; all rights reserved. Excluded from MIT and CC BY 4.0.
      caption: A cube holds a button down with its weight
      alt: A cube holds a button down with its weight
      markers:
        - x: 80
          'y': 53
          label: The support transfers the cube’s weight to the button
    tips:
      - Let players test the rule in another example before a major challenge.
    examples:
      - title: Portal
        url: 'https://store.steampowered.com/app/400/'
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/metroidbrainia
---
# Discovering physical and systemic rules

id: metroidbrainia--family-04
type: mechanic
key: mechanic/metroidbrainia--family-04
lang: en
status: active
url: https://gamemechanics.pro/en/knowledge/mechanic/metroidbrainia--family-04/

Players infer a consistent rule governing forces or interactions and apply it to new problems.

## At a glance

![A cube holds a button down with its weight](https://gamemechanics.pro/images/mechanics/adventure-portal-04.webp)

[Portal](https://store.steampowered.com/app/400/) · Game imagery © its respective rights holders. Publisher-distributed Steam screenshot; all rights reserved. Excluded from MIT and CC BY 4.0.

1. The support transfers the cube’s weight to the button

- Let players test the rule in another example before a major challenge.

- [Portal](https://store.steampowered.com/app/400/)

## How it works

The player finds out by what laws the world works. These laws may be fictitious if the game applies them consistently. An example of deep exploration of a small set of interactions: A Monster's Expedition, where moving trees creates paths between islands. The developers specifically emphasize simple mechanics with many unlockable possibilities. Description of Draknek & Friends.

## Variants

### Variants and applications

<a id="family-04-variants"></a>

- Mass and balance. The weight of objects affects platforms, counterweights, supports and structural stability <a id="variant-metroidbrainia-04-01"></a>
- Friction and adhesion. Surfaces hold objects differently, convey movement, or allow sliding <a id="variant-metroidbrainia-04-02"></a>
- Buoyancy and displacement. Objects change fluid levels, become bridges, or lift other objects <a id="variant-metroidbrainia-04-03"></a>
- Material conversion. An object changes properties when frozen, melted, destroyed, dissolved, or otherwise transformed <a id="variant-metroidbrainia-04-04"></a>
- Heat and combustion. The player unlocks the conditions of heating, ignition, spread and cease fire <a id="variant-metroidbrainia-04-05"></a>
- Conductivity and signal transmission. Electricity, energy or conditioned signal propagates according to discovered rules <a id="variant-metroidbrainia-04-06"></a>
- Optical interactions. Light is reflected, refracted, blocked or focused to control devices and access <a id="variant-metroidbrainia-04-07"></a>
- Acoustic interactions. Sound travels through a medium, is reflected, or causes resonance and a physical reaction. <a id="variant-metroidbrainia-04-08"></a>
- Pressure and flows. Closing channels, changing pressure or flow direction rearranges the available space <a id="variant-metroidbrainia-04-09"></a>

## Context and limits

In metroidbrainia, progression depends heavily on the player's knowledge: an open rule changes the available actions, routes, or decisions. 91 mechanics in 12 groups, progression techniques, training techniques and edge cases are stored here. For a project, check what knowledge is acquired, how it is derived, what it reveals, and where it is reused. Specific game solutions are not disclosed.

## 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.

- [Description of Draknek & Friends](https://store.steampowered.com/app/1052990/A_Monsters_Expedition/) (id: source-ce656b8313634ee1)
- [Portal](https://store.steampowered.com/app/400/) (id: source-8a3a7e105b6c798e)

CC-BY-4.0 · gamemechanics.pro contributors
