---
key: mechanic/online-participation--t326
type: mechanic
id: online-participation--t326
lang: en
title: 'Player markets, gifts and trading'
summary: >-
  A market transfers items at an agreed price. Steam Community Market shows
  participant listings, available quantities and starting prices.
updatedAt: '2026-10-22'
status: active
url: 'https://gamemechanics.pro/en/knowledge/mechanic/online-participation--t326/'
jsonUrl: >-
  https://gamemechanics.pro/api/v1/knowledge/en/mechanic/online-participation--t326.json
markdownUrl: >-
  https://gamemechanics.pro/content/knowledge/en/mechanic/online-participation--t326.md
aliases:
  - 'Markets, gifts and player trading'
tags:
  - Online worlds and participation
  - Mechanics and variants
sourceIds:
  - source-d6403e86b24cf114
  - source-bac2d35c0dd064b6
sources:
  - id: source-d6403e86b24cf114
    title: 'Steamworks: Multiplayer'
    url: 'https://partner.steamgames.com/doc/features/multiplayer'
    verifiedAt: null
  - id: source-bac2d35c0dd064b6
    title: Steam Community Market
    url: 'https://steamcommunity.com/market/'
    verifiedAt: null
relations: []
placements:
  - catalogId: online-participation
    id: t326
    title: Online worlds and participation
    url: 'https://gamemechanics.pro/en/mechanics/online-participation/#t326'
    categoryIds:
      - mechanics
supersededBy: []
attributes:
  preview:
    updatedAt: '2026-10-22'
    title: 'Markets, gifts and player trading'
    description: >-
      A market transfers items at an agreed price. Steam Community Market shows
      participant listings, available quantities and starting prices.
    image:
      src: images/mechanics/online-steam-market.webp
      width: 1266
      height: 712
      crop:
        x: 150
        'y': 65
        width: 950
        height: 625
      game: Steam Community Market
      sourceUrl: 'https://steamcommunity.com/market/'
      originalUrl: 'https://steamcommunity.com/market/'
      credit: Valve / respective game publishers
      rights: >-
        © Valve / respective game publishers. Official image or public interface
        capture; all rights reserved. Excluded from portal MIT and CC BY 4.0.
      caption: 'Steam Community Market: public listings, captured October 22, 2026'
      alt: 'Steam Community Market: public listings, captured October 22, 2026'
      markers:
        - x: 59
          'y': 29
          label: Price and listing quantity are visible before choosing an item
    tips:
      - >-
        Show fees, transfer conditions and the final price before confirming a
        trade.
    examples:
      - title: Steam Community Market
        url: 'https://steamcommunity.com/market/'
endsAt: null
provenance: >-
  Original bilingual editorial overviews authored for gamemechanics.pro on
  2026-10-20 and reviewed on 2026-10-21. Scenarios are hypothetical design
  examples; prototype checks describe work to perform, not completed playtests.
  Primary sources support the stated techniques and implementation context, not
  every proposed variant.
license: CC-BY-4.0
codeLicense: MIT
attribution: gamemechanics.pro contributors
catalogKey: catalog/online-participation
---
# Player markets, gifts and trading

id: online-participation--t326
type: mechanic
key: mechanic/online-participation--t326
lang: en
status: active
url: https://gamemechanics.pro/en/knowledge/mechanic/online-participation--t326/

A market transfers items at an agreed price. Steam Community Market shows participant listings, available quantities and starting prices.

## At a glance

![Steam Community Market: public listings, captured October 22, 2026](https://gamemechanics.pro/images/mechanics/online-steam-market.webp)

[Steam Community Market](https://steamcommunity.com/market/) · © Valve / respective game publishers. Official image or public interface capture; all rights reserved. Excluded from portal MIT and CC BY 4.0.

1. Price and listing quantity are visible before choosing an item

- Show fees, transfer conditions and the final price before confirming a trade.

- [Steam Community Market](https://steamcommunity.com/market/)

## How it works

Player exchange transfers resource ownership under agreed terms, connecting trust to transparency and atomic settlement.

## Variants

### Mechanic variants

<a id="t326-variants"></a>

- Trade windows require confirmation from both parties. <a id="t326-v1"></a>
- Gifts are distinct from expected reciprocal payment. <a id="t326-v2"></a>
- Markets reserve goods until order completion. <a id="t326-v3"></a>
- Trading limits preserve a reward's intended role. <a id="t326-v4"></a>

## Design example

Players confirm ore for a tool and changing either item clears both confirmations.

Prototype check: Test simultaneous cancellation and disconnection so items and currency cannot duplicate or disappear between participants.

## Context and limits

Online mechanics connect individual contributions to shared state, participation timing and explicit commitments between players. Each overview separates player actions, state changes and alternative rules. Examples are hypothetical design scenarios, not claims about a named game. A prototype check states an observable question for the next iteration. Existing detailed references remain separately linked from the direction map.

## Connected materials


## Sources and provenance

Original bilingual editorial overviews authored for gamemechanics.pro on 2026-10-20 and reviewed on 2026-10-21. Scenarios are hypothetical design examples; prototype checks describe work to perform, not completed playtests. Primary sources support the stated techniques and implementation context, not every proposed variant.

- [Steamworks: Multiplayer](https://partner.steamgames.com/doc/features/multiplayer) (id: source-d6403e86b24cf114)
- [Steam Community Market](https://steamcommunity.com/market/) (id: source-bac2d35c0dd064b6)

CC-BY-4.0 · gamemechanics.pro contributors