---
key: mechanic/puzzle--family-assembly
type: mechanic
id: puzzle--family-assembly
lang: en
title: 'Assembly, packing and fitting'
summary: >-
  The player assembles a whole or packs a space while accounting for shape,
  adjacency and free room.
updatedAt: '2026-10-22'
status: active
url: 'https://gamemechanics.pro/en/knowledge/mechanic/puzzle--family-assembly/'
jsonUrl: >-
  https://gamemechanics.pro/api/v1/knowledge/en/mechanic/puzzle--family-assembly.json
markdownUrl: >-
  https://gamemechanics.pro/content/knowledge/en/mechanic/puzzle--family-assembly.md
aliases:
  - Assembly and packing
tags:
  - Puzzles
  - Mechanics catalog
sourceIds:
  - source-95d2f8a833d53db8
sources:
  - id: source-95d2f8a833d53db8
    title: A Little to the Left
    url: 'https://store.steampowered.com/app/1629520/'
    verifiedAt: null
relations: []
placements:
  - catalogId: puzzle
    id: family-assembly
    title: Puzzles
    url: 'https://gamemechanics.pro/en/mechanics/puzzle/#family-assembly'
    categoryIds:
      - section-1
supersededBy: []
attributes:
  preview:
    updatedAt: '2026-10-22'
    title: Assembly and packing
    description: >-
      The player assembles a whole or packs a space while accounting for shape,
      adjacency and free room.
    image:
      src: images/mechanics/adventure-little-to-left-00.webp
      width: 1440
      height: 810
      game: A Little to the Left
      sourceUrl: 'https://store.steampowered.com/app/1629520/'
      originalUrl: >-
        https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1629520/ss_dfd3c87efd52db3ea48b4de22de569bd9eb42ca2.1920x1080.jpg?t=1791454263
      credit: Max Inferno / Secret Mode
      rights: >-
        Game imagery © its respective rights holders. Publisher-distributed
        Steam screenshot; all rights reserved. Excluded from MIT and CC BY 4.0.
      caption: Tools must fit into the case’s compartments
      alt: Tools must fit into the case’s compartments
      markers:
        - x: 45
          'y': 41
          label: Compartments constrain placement shape
        - x: 76
          'y': 64
          label: Objects have different dimensions
    tips:
      - Allow item shapes to be compared with free space before placement.
    examples:
      - title: A Little to the Left
        url: 'https://store.steampowered.com/app/1629520/'
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/puzzle
---
# Assembly, packing and fitting

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

The player assembles a whole or packs a space while accounting for shape, adjacency and free room.

## At a glance

![Tools must fit into the case’s compartments](https://gamemechanics.pro/images/mechanics/adventure-little-to-left-00.webp)

[A Little to the Left](https://store.steampowered.com/app/1629520/) · Game imagery © its respective rights holders. Publisher-distributed Steam screenshot; all rights reserved. Excluded from MIT and CC BY 4.0.

1. Compartments constrain placement shape
2. Objects have different dimensions

- Allow item shapes to be compared with free space before placement.

- [A Little to the Left](https://store.steampowered.com/app/1629520/)

## How it works

Compose a whole from parts, taking into account shape, proximity and free space.

## Variants

### Variants and applications

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

- Image assembly. Definition: Connect fragments according to the pattern and geometry of the boundaries. Conditional example: Restore a broken drawing. Terms: jigsaw; puzzle <a id="variant-jigsaw"></a>
- Coordination of boundaries. Definition: Place tiles so that adjacent sides satisfy the rule. Conditional example: Match halves of symbols. Terms: edge matching; domino <a id="variant-edge-match"></a>
- Tiling with figures. Definition: Cover an area with a set of shapes without overlaps or illegal spaces. Conventional example: Fit all pentominoes into a rectangle. Terms: polyomino; pentomino. <a id="variant-polyomino"></a>
- Silhouette assembly. Definition: To create a given contour from a fixed set of parts. Conditional example: To obtain a silhouette of a bird from seven parts. Terms: tangram; tangram. <a id="variant-silhouette-assembly"></a>
- Packing volume. Definition: Fit volumetric parts into a given shell. Conditional example: Assemble a cube from spatial elements. Terms: Soma cube; catfish cube. <a id="variant-volume-packing"></a>
- Arrangement of uneven items. Definition: Place objects with different shapes and orientations in a limited space. Conditional example: Fit all the equipment in a suitcase. Terms: inventory tetris. <a id="variant-inventory-packing"></a>
- Assembly in layers. Definition: To compose an object from layers, taking into account overlaps, holes and heights. Conditional example: To assemble a relief along horizontal sections. <a id="variant-stack-assembly"></a>
- Coordination of orientations. Definition: Arrange parts so that the outer edges or directions coincide with the goal. Conditional example: Place the desired symbol on each side of the structure. <a id="variant-orientation-assembly"></a>
- Mosaic restoration. Definition: Select and orient fragments to continue the overall pattern. Conditional example: Fill in the gaps in the ornament. <a id="variant-mosaic-completion"></a>
- Accurate object coverage. Definition: Select a subset of elements that covers each goal exactly once. Conditional example: Cover all marks with patterns without repetitions. <a id="variant-exact-cover"></a>

## Context and limits

A wide catalog of mechanics for digital puzzles, paper logic problems and physical puzzles. Each position contains an action or rule and a conditional example of application.

## 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.

- [A Little to the Left](https://store.steampowered.com/app/1629520/) (id: source-95d2f8a833d53db8)

CC-BY-4.0 · gamemechanics.pro contributors
