{"schemaVersion":1,"record":{"key":"mechanic/economy-exchange--t090","type":"mechanic","id":"economy-exchange--t090","lang":"en","title":"Markets, auctions and bidding","summary":"Auctions allocate scarce objects through competing offers while markets expose available exchange conditions.","updatedAt":"2026-10-22","status":"active","url":"https://gamemechanics.pro/en/knowledge/mechanic/economy-exchange--t090/","jsonUrl":"https://gamemechanics.pro/api/v1/knowledge/en/mechanic/economy-exchange--t090.json","markdownUrl":"https://gamemechanics.pro/content/knowledge/en/mechanic/economy-exchange--t090.md","aliases":[],"tags":["Economy and exchange","Mechanics and variants"],"sourceIds":["source-96be186d8ada50a0","source-c5cfb02375225753"],"sources":[{"id":"source-96be186d8ada50a0","title":"Factorio: Content","url":"https://www.factorio.com/game/content","verifiedAt":null},{"id":"source-c5cfb02375225753","title":"Offworld Trading Company","url":"https://store.steampowered.com/app/271240/","verifiedAt":null}],"sections":[{"id":"principle","title":"How it works","body":"Auctions allocate scarce objects through competing offers while markets expose available exchange conditions."},{"id":"variants","title":"Variants","body":"### Mechanic variants\n\n<a id=\"t090-variants\"></a>\n\n- Open bidding reveals the current best price. <a id=\"t090-v1\"></a>\n- Sealed bids require valuation without observation. <a id=\"t090-v2\"></a>\n- Reverse auctions choose the lowest service price. <a id=\"t090-v3\"></a>\n- Limit orders wait for a matching offer. <a id=\"t090-v4\"></a>"},{"id":"example","title":"Design example","body":"Players secretly value a bridge-building right based on an expected freight flow.\n\nPrototype check: Test tied bids, closing time and returning reserved resources to losing participants."},{"id":"context","title":"Context and limits","body":"Economic rules connect production, allocation, commitments and exchange; prices should communicate scarcity and available alternatives. 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."}],"relations":[],"placements":[{"catalogId":"economy-exchange","id":"t090","title":"Economy and exchange","url":"https://gamemechanics.pro/en/mechanics/economy-exchange/#t090","categoryIds":["mechanics"]}],"supersededBy":[],"attributes":{"preview":{"updatedAt":"2026-10-22","title":"Markets, auctions and bidding","description":"Auctions allocate scarce objects through competing offers while markets expose available exchange conditions.","image":{"src":"images/mechanics/priority-offworld-trading-00.webp","width":1440,"height":810,"crop":{"x":1050,"y":0,"width":390,"height":488},"game":"Offworld Trading Company","sourceUrl":"https://store.steampowered.com/app/271240/","originalUrl":"https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/271240/ss_fdb1d1301e763bd7cdbed153a2e83a2801bbdc67.1920x1080.jpg?t=1790866876","credit":"Mohawk Games / Stardock Entertainment","rights":"Game imagery © its respective rights holders. Publisher-distributed Steam screenshot; all rights reserved. Excluded from MIT and CC BY 4.0.","caption":"Corporate share prices and sell actions","alt":"Corporate share prices and sell actions","markers":[{"x":94,"y":7,"label":"Current corporate share price"}]},"tips":["Show the traded asset, price and final confirmation moment."],"examples":[{"title":"Offworld Trading Company","url":"https://store.steampowered.com/app/271240/"}]}},"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/economy-exchange"}}