---
key: mechanic/rpg-grind--weighted-loot
type: mechanic
id: rpg-grind--weighted-loot
lang: en
title: Weighted random rewards
summary: >-
  The result is drawn from a probability distribution; attempt frequency and
  table composition determine the path to a goal.
updatedAt: '2026-10-22'
status: active
url: 'https://gamemechanics.pro/en/knowledge/mechanic/rpg-grind--weighted-loot/'
jsonUrl: >-
  https://gamemechanics.pro/api/v1/knowledge/en/mechanic/rpg-grind--weighted-loot.json
markdownUrl: >-
  https://gamemechanics.pro/content/knowledge/en/mechanic/rpg-grind--weighted-loot.md
aliases: []
tags:
  - RPG grinding
  - Delivery and distribution
sourceIds:
  - source-7e8cddf5bd2df8d5
sources:
  - id: source-7e8cddf5bd2df8d5
    title: Melvor Idle
    url: 'https://store.steampowered.com/app/1267910/'
    verifiedAt: null
relations: []
placements:
  - catalogId: rpg-grind
    id: weighted-loot
    title: RPG grinding
    url: 'https://gamemechanics.pro/en/mechanics/rpg-grind/#weighted-loot'
    categoryIds:
      - reward-distribution
supersededBy: []
attributes:
  preview:
    updatedAt: '2026-10-22'
    title: Weighted random rewards
    description: >-
      The result is drawn from a probability distribution; attempt frequency and
      table composition determine the path to a goal.
    image:
      src: images/mechanics/rpg-melvor-idle-09.webp
      width: 1440
      height: 810
      crop:
        x: 818
        'y': 420
        width: 600
        height: 293
      game: Melvor Idle
      sourceUrl: 'https://store.steampowered.com/app/1267910/'
      originalUrl: >-
        https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1267910/ss_95358489ee0448102954f2c72e16d995d192d6e1.1920x1080.jpg?t=1789749689
      credit: Games by Malcs / Jagex Ltd
      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: 'Chances of fish, junk and a special find'
      alt: 'Chances of fish, junk and a special find'
      markers:
        - x: 81
          'y': 56
          label: The fishing location defines the weights of different outcomes
    tips:
      - Show probabilities and the conditions that change reward distribution.
    examples:
      - title: Melvor Idle
        url: 'https://store.steampowered.com/app/1267910/'
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
---
# Weighted random rewards

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

The result is drawn from a probability distribution; attempt frequency and table composition determine the path to a goal.

## At a glance

![Chances of fish, junk and a special find](https://gamemechanics.pro/images/mechanics/rpg-melvor-idle-09.webp)

[Melvor Idle](https://store.steampowered.com/app/1267910/) · 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 fishing location defines the weights of different outcomes

- Show probabilities and the conditions that change reward distribution.

- [Melvor Idle](https://store.steampowered.com/app/1267910/)

## How it works

The result is drawn from a probability distribution; attempt frequency and table composition determine the path to a goal.

## Variants

### Variants

<a id="weighted-loot-options"></a>

- Use an independent table for each attempt. <a id="weighted-loot-option-1"></a>
- Choose rewards through several sequential rolls. <a id="weighted-loot-option-2"></a>
- Separate tables by region or difficulty. <a id="weighted-loot-option-3"></a>

## Design example

A chest selects item type, then quality, then properties.

## 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.

- [Melvor Idle](https://store.steampowered.com/app/1267910/) (id: source-7e8cddf5bd2df8d5)

CC-BY-4.0 · gamemechanics.pro contributors