---
key: mechanic/rpg-grind--breeding-lines
type: mechanic
id: rpg-grind--breeding-lines
lang: en
title: Breeding and inheritance
summary: >-
  The player repeats parent selection and offspring raising for desired
  inherited traits.
updatedAt: '2026-10-22'
status: active
url: 'https://gamemechanics.pro/en/knowledge/mechanic/rpg-grind--breeding-lines/'
jsonUrl: >-
  https://gamemechanics.pro/api/v1/knowledge/en/mechanic/rpg-grind--breeding-lines.json
markdownUrl: >-
  https://gamemechanics.pro/content/knowledge/en/mechanic/rpg-grind--breeding-lines.md
aliases: []
tags:
  - RPG grinding
  - 'Companions, pets and mounts'
sourceIds:
  - source-d19ac324bbb4d83d
sources:
  - id: source-d19ac324bbb4d83d
    title: Final Fantasy XIV
    url: >-
      https://na.finalfantasyxiv.com/lodestone/playguide/contentsguide/goldsaucer/chocoboracing/
    verifiedAt: null
relations: []
placements:
  - catalogId: rpg-grind
    id: breeding-lines
    title: RPG grinding
    url: 'https://gamemechanics.pro/en/mechanics/rpg-grind/#breeding-lines'
    categoryIds:
      - companion-progression
supersededBy: []
attributes:
  preview:
    updatedAt: '2026-10-22'
    title: Breeding and inheritance
    description: >-
      The player repeats parent selection and offspring raising for desired
      inherited traits.
    image:
      src: images/mechanics/rpg-ffxiv-racing-42.webp
      width: 600
      height: 576
      game: Final Fantasy XIV
      sourceUrl: >-
        https://na.finalfantasyxiv.com/lodestone/playguide/contentsguide/goldsaucer/chocoboracing/
      originalUrl: 'https://lds-img.finalfantasyxiv.com/h/g/_DaGHy8vHh5G6mJQ6Eig81dDAY.jpg'
      credit: Square Enix; official guide screenshot
      rights: >-
        Game imagery © its respective rights holders. Official game guide or
        publisher-distributed screenshot; all rights reserved. Excluded from MIT
        and CC BY 4.0.
      caption: Comparing parents and heritable traits
      alt: Comparing parents and heritable traits
      markers:
        - x: 51
          'y': 31
          label: The parents are compared by stats and inherited abilities
    tips:
      - 'Distinguish inherited traits, randomness and growth requirements.'
    examples:
      - title: Final Fantasy XIV
        url: >-
          https://na.finalfantasyxiv.com/lodestone/playguide/contentsguide/goldsaucer/chocoboracing/
endsAt: null
provenance: >-
  Original editorial RPG grind taxonomy authored for gamemechanics.pro on
  2026-10-20 and expanded to cover activities, progression goals, reward rules
  and constraints. All original thirty family/branch/variant identities are
  preserved. Official developer and publisher sources support only the
  specifically described released-game observations; design variants and
  scenarios are hypothetical.
license: CC-BY-4.0
codeLicense: MIT
attribution: gamemechanics.pro contributors
catalogKey: catalog/rpg-grind
---
# Breeding and inheritance

id: rpg-grind--breeding-lines
type: mechanic
key: mechanic/rpg-grind--breeding-lines
lang: en
status: active
url: https://gamemechanics.pro/en/knowledge/mechanic/rpg-grind--breeding-lines/

The player repeats parent selection and offspring raising for desired inherited traits.

## At a glance

![Comparing parents and heritable traits](https://gamemechanics.pro/images/mechanics/rpg-ffxiv-racing-42.webp)

[Final Fantasy XIV](https://na.finalfantasyxiv.com/lodestone/playguide/contentsguide/goldsaucer/chocoboracing/) · Game imagery © its respective rights holders. Official game guide or publisher-distributed screenshot; all rights reserved. Excluded from MIT and CC BY 4.0.

1. The parents are compared by stats and inherited abilities

- Distinguish inherited traits, randomness and growth requirements.

- [Final Fantasy XIV](https://na.finalfantasyxiv.com/lodestone/playguide/contentsguide/goldsaucer/chocoboracing/)

## How it works

The player repeats parent selection and offspring raising for desired inherited traits.

## Variants

### Variants

<a id="breeding-lines-options"></a>

- Choose pairs by inheritable traits. <a id="breeding-lines-option-1"></a>
- Establish a rare trait in a lineage. <a id="breeding-lines-option-2"></a>
- Exchange offspring to broaden parent selection. <a id="breeding-lines-option-3"></a>

## Design example

A breeder crosses fast and enduring animals while preserving successful lines.

## Context and limits

A systematic RPG grind reference: 110 mechanics and 330 variants in 18 sections. Four layers answer different questions: what the player repeats, what develops, how rewards arrive and what constrains the loop. It covers single-player RPGs, ARPGs, MMORPGs and adjacent management and accumulation systems. Every mechanic has an explanation, variants and a hypothetical example; coverage, combinations and verified game observations follow the catalog.

## Connected materials


## Sources and provenance

Original editorial RPG grind taxonomy authored for gamemechanics.pro on 2026-10-20 and expanded to cover activities, progression goals, reward rules and constraints. All original thirty family/branch/variant identities are preserved. Official developer and publisher sources support only the specifically described released-game observations; design variants and scenarios are hypothetical.

- [Final Fantasy XIV](https://na.finalfantasyxiv.com/lodestone/playguide/contentsguide/goldsaucer/chocoboracing/) (id: source-d19ac324bbb4d83d)

CC-BY-4.0 · gamemechanics.pro contributors