Auction and bidding games, explained
Every other mechanic on this site hands you a price. Worker placement charges a worker, engine building charges resources, and the cost is printed somewhere a player can read it before committing. An auction deletes the price tag. The lot is worth whatever the room decides it is worth in the next sixty seconds, and the room includes the person who wants it second-most, the person who wants you to overpay for it, and you — trying to work out what it is worth to your position before somebody says a bigger number. That is why auction games feel louder, faster, and more personal than their components suggest, and why a group that loves them and a group that bounces off them are usually reacting to the same rule from opposite sides.
This guide explains what an auction actually is in a board game, sorts the main auction types by the two questions explainers usually skip — who can see the bids, and who receives the money — verifies three anchor games against their published specifications, and finishes with a ceiling-setting procedure that turns "bid what it feels like" into a decision made before the lot opens.
What an auction actually is
BoardGameGeek's mechanic definition is usefully plain: auction and bidding games require players to place a bid, usually money, on items in order to enhance their position, with bidding taking turns until one winner is established and the winner takes control of the item. Two details in that definition do quiet work. First, the item has no fixed value in the rules — its price is an output of the auction, not an input, which is the opposite of a shop. Second, most games include a rule that lowers the price of an item nobody wants at its current level, because an auction with no interested bidders is not a bargain, it is a stall.
The examples attached to the definition show the range. In Power Grid, players start with no power plants at all and must win bids before they can produce any power — the auction is the front door to the entire game. In Vegas Showdown, players bid on rooms such as slot machines and restaurants to build a larger, more prestigious hotel. Bidding in both games runs in turn format and passing is always an option. Passing matters more than it looks: a credible pass is what keeps an auction honest, because a bidder who cannot walk away is not bidding, they are donating.
Who gets paid: the economy under the auction
Here is the distinction the taxonomy lists almost never draw, and it changes what a sensible bid is. In an open economy auction, the winning bid leaves the players' economy — it goes to the bank, and that money is simply gone, which makes every bid a pure cost. In a closed economy auction, the money or resource spent goes directly to other participants. The Family Gamers' auction episode gives the cleanest example: in Ra, the bidding resource is a numbered sun disc, and the winning disc is traded to the player the winner took the turn from — the currency circulates instead of draining. Big-spending in a closed economy arms your opponents; big-spending in an open economy only disarms you. The same lot, at the same price, is a different purchase under each rule.
Modern Art splits the difference in a way worth memorising, because many designs copy it: when an auction ends, the highest bidder pays the auctioneer — the player who offered the painting — and only if the auctioneer wins their own painting does the money go to the bank instead. So the seller profits from a bidding war over their lot, which is why choosing which painting to offer, and when, is a decision in that game and not a formality. Before bidding in any auction game, one question belongs at the top of the teach: when somebody wins, whose pocket does the money land in? The answer tells you whether aggressive bidding funds the table or starves it.
The auction types, compared
Sort the standard types by information — what bidders know while they bid — and the catalogue stops being a vocabulary list and becomes a set of genuinely different games:
| Type | How it runs | What you know while bidding | The skill it rewards |
|---|---|---|---|
| Open continuous (English) | Players bid in turn, raising, until all but one drop out; the highest bidder wins and pays the price bid | Everything: every bid is public as it happens | Nerve and reading the room — plus the discipline to stop |
| Once-around | Bidding circles the table a single time; each player gets one chance to bid or pass | Only the bids made before yours; later seats bid with full information | Valuation under pressure — there is no second chance to correct a low read |
| Sealed bid | Everyone chooses an amount secretly and all bids are revealed at once; the highest wins | Nothing about this lot — only what opponents have done in earlier lots | Modelling other players' valuations, and bidding the model, not the lot |
| Dutch | The price starts high and gradually falls until one player decides to buy | The current price, ticking down in public | Timing: buying one tick before a rival does, at the highest price you can stand |
| Fixed price | The seller names a price; players in turn may buy at that price or pass | The price itself, set by an opponent with their own agenda | Judging the seller: is the price a bargain, a bluff, or a trap for the first passer-by? |
The Dutch row has a modern cousin worth recognising: a market track where items slide down and get cheaper the longer they sit, as in Century: Spice Road, is a Dutch auction wearing a shop's clothes — the decision is identical, buy now at this price or gamble that nobody takes it before it gets cheaper. And note what the table's third column does to game length. Open continuous bidding can circle many times before everyone but one bidder gives up, which is where its drama and its downtime both live. Once-around bidding gives each player exactly one decision, which is why games built on it play briskly even when the decisions are agonising.
Three spec-verified poles: Modern Art, Ra, and Power Grid
Specifications verified against reference listings for this guide, October 25, 2026:
| Spec | Modern Art | Ra | Power Grid |
|---|---|---|---|
| Designer / first publication | Reiner Knizia / Hans im Glück (1992) | Reiner Knizia / Alea (1999) | Friedemann Friese / 2F-Spiele (2004), Rio Grande Games English edition |
| Players | 3–5 | 2–5 (later editions; originally 3–5) | 2–6 |
| Playing time | 60 minutes | 45–60 minutes | 120+ minutes |
| Age | 10+ | 12+ | 12+ |
| The auction is… | The whole game: five auction types printed on the cards themselves | The whole game: sun discs bid for tile lots across three epochs | One phase of a larger economy: plants are won at auction, then fuelled and networked |
| The winner pays… | The auctioneer (the bank, if the auctioneer wins) | With a numbered sun disc, which swaps into circulation | The bank, for a plant that then needs resources bought separately |
Modern Art is the pure form and the best teaching tool in the genre: players are art dealers handling works by five fictional artists, each painting card carries the symbol of the auction type it triggers — open, once-around (one offer), hidden (sealed), fixed price, or double — and at the end of each round all purchased paintings are sold back to the bank, with the most popular artists worth the most and their value carrying into future rounds. The round ends the moment a fifth painting by any one artist reaches the table, and only the three best-selling artists pay out at all; the rest are worth nothing. It was recommended for the 1993 Spiel des Jahres, and it remains the game that contains the whole taxonomy in one small box.
Ra is the once-around pole. Play runs in three rounds called epochs, players bid with numbered sun tokens for lots of tiles, and tiles score at the end of each epoch for the player who won them — so a lot's value depends on scoring categories a player is already collecting, which means the same lot is honestly worth different amounts to different seats. It won the 2000 International Gamers Award. The closed sun economy is the subtle part: because the winning disc swaps with the disc on the board, spending a high sun does not remove it from the game — it hands a strong bidding tool to whoever wins next.
Power Grid is the embedded pole, and the longest evening of the three by a wide margin. Each player runs a company, bids on power plants, then separately buys the resources to fuel them and builds a network of cities to supply. Winning a plant is only the first of three linked costs, which is exactly why its auctions punish ceiling-free bidding hardest: an overpaid plant still has to be fed.
Set your ceiling before the lot opens: a procedure
Auction skill is mostly valuation done early, while nobody is shouting. Run this procedure on any lot that matters, before the first bid is spoken:
1. Name what the lot does for your position, in points or capability, not feelings. "Completes the set that scores at epoch end" or "powers two more cities" is a value. "It would be annoying if she got it" is not.
2. Convert that value into the game's currency at the rate the game itself uses. If end-game money is score, the conversion is direct. If the currency buys other things — fuel, network connections, future lots — price the lot against the best alternative purchase, not against zero.
3. Subtract the follow-on costs. A plant that needs fuel, a painting whose artist may finish outside the top three, a tile lot that only scores if a matching piece arrives later: the bid buys the obligation as well as the asset.
4. Adjust for who gets paid. In a closed economy, lower the ceiling when the payment would hand a strong disc or a war chest to the rival most likely to use it against you. In an open economy, the payment vanishes, so the ceiling from step 3 stands.
5. Say the number, then treat passing as executing the plan, not losing. When bidding passes the ceiling, pass once and stay out; re-entering "just once more" is how ceilings become decorations.
Success check: at the end of the game, the lots won should cluster at or below their ceilings, and any lot that went far above ceiling should belong to somebody else. A table where the winner of every lot paid the room's second-highest valuation plus a little more is a table running this procedure whether it names it or not.
How to read an auction game before you buy it
Three checks, in order. First, the payment destination — bank, auctioneer, or circulating currency — because it decides whether aggression funds opponents. Second, the information structure, from the comparison table above: sealed and once-around designs reward preparation and punish hesitation, open continuous designs reward nerve, and groups that dislike direct confrontation usually prefer the preparation end. Third, whether the auction is the game or a phase. A pure auction game like Modern Art or Ra finishes in about an hour and lives or dies on the bidding itself; an embedded auction like Power Grid's is one skill among several across a two-hour evening, which suits players who want bidding to matter without carrying the whole night.
FAQ
Is bidding the same as an auction? Bidding is the act; an auction is the procedure that organises competing bids into one winner. Some games use bids without auctions — bidding for turn order, for example — where players bid on priority rather than on an item. If nobody wins a lot at the end, it was bidding, not an auction.
Why does the winner so often feel like they overpaid? Because structurally, they did — relative to the room. The winner is by definition the player who valued the lot highest, and every other bidder's ceiling, revealed by their last bid or their pass, was lower. The procedure above does not prevent that feeling; it makes sure the price was under a ceiling set before the room's enthusiasm became contagious.
What is a gentle first auction game? On the verified specifications above, Ra is the usual recommendation: one bid per player per lot, a fixed set of sun discs that makes valuation concrete, and a 45–60 minute running time. Modern Art is the better second step, once a group wants several auction types — and the seller's decisions — in play.
New to reading hobby-game boxes in general? Our guide to complexity ratings explains how to weigh the numbers on the side of the box before the auction for your money starts.