Auction/Bidding

Siena

From the ZuGames website:

In the year 1338 the Siena’s Town Council charged the famous artist Ambrogio Lorenzetti to paint a fresco showing the town and its commerce. You will play the game above the painting that he made. You will start as Peasants, sowing the ground and selling your crop along the Via Francigena. If you will save enough florins you will be more comfortably off, trading in cloth and spices throughout Tuscany. But your dream is bigger: to enter the Council of the Nine, the town’s government. Therefore you will have to change into Bankers and use your money to obtain the Senesi’s consent: will you finance the artists of that time or contribute towards the construction of the new Torre del Mangia? Be careful, the florins that you have saved could not be enough! Behind every corner of the town other players’ pitfalls hide themselves: beggars, thieves, pretty women inside the inn...
Be prepared for a unique game experience.

Medici

Another Reiner Knizia standby, this game plays very well with varying numbers of people. The object is to accrue the most points during three rounds, which you do by spending your points to bid on sets of cards. Each turn the current player turns up one to three cards for all the players to bid on, with the highest bid taking all cards. The cards denote a commodity type and quantity/value. The round ends when each player's ships are full, or the commodity card deck is exhausted. After each round, points are awarded to each player having the most of a given commodity, and to the one with the most valuable total "cargo load".

Part of the Knizia auction trilogy.
One of the Knizia Florentine auction games.

Related Games:

Medici vs Strozzi (two-player version)
Strozzi

Planet Steam

Welcome, dear Imperialists. It's the year 2415. The interplanetary federation (IPF) has done a great job in the last centuries. All necessary precautions have been taken to conquer this planet named "Steam". The core of the planet consists of a 6,500º Celsius hot source containing different resources, including water. It has taken over one hundred years to complete the first block of 42 shafts from the surface to the core.

But now the time has come. From every shaft surges the hot steam that is the basis of the production of raw materials. To be able to use and process this steam, platforms have to be placed over the shafts. Later, we can use the platforms to connect the water purification tanks. By using several tank extractors, we can harvest other resources like energy, ore, and quartz from the steam. These resources are important. You will need them to grow your steam empires. You will need to increase the capacity of your landing craft to transport your harvested materials off planet. Buy and sell the resources at the Trading terminal for profit, as currency is – like on earth – always in short supply on Steam. To help you in your endeavours, the IPF has placed several specialists at your command – but getting the specialist that you require may not be easy.

Planet Steam is a board game in which two to five players take the roles of entrepreneurs in a steampunk boomtown, racing to assemble equipment, claim plots of land, extract resources, and accumulate riches. After harvesting resources using tanks and converters, players must buy and sell those resources in a volatile and ever-shifting market. The one who earns the most income will, in the end, be victorious. However, only through shrewd resource management and clever manipulation of supply and demand can a player reign supreme!

New Amsterdam

Nieuw Amsterdam was founded by the Dutch West Indies Company in order to encourage the lucrative beaver pelt trade with the local Native American hunters along the Hudson River. To establish a trading post there, they needed a town and a fort, which was built on the tip of Manhattan Island. To encourage European patrons – that is, settlers of means or noble birth – to populate the colony, they granted them both land and indentured servants. The patrons became the lords of a new feudal system not unlike that seen in Europe.

In Nieuw Amsterdam, players are those patrons, and they bid on action lots in order to build businesses, work land for both food and building materials, compete in elections, ship furs to the Old World, and trade with the Lenape Indians – a process that gets more complicated as players claim more land and push the Lenape camps farther up the Hudson River.

Mercante

A city as large and crowded as Tempest depends on the daily arrival of supplies and foodstuffs, and the wealthiest echelons of society demand the latest goods and luxuries almost as frequently. Domination of this bustling trade is the ultimate goal of every merchant house in the city.

In Mercante, you control one of these merchant houses. Deploy your trusted agents to purchase goods from arriving ships and sell them into the most profitable markets. You must also do more – from "enticing" senators to outright skulduggery – to claim your rightful place at the pinnacle of Tempest's merchant class. Do you have the business acumen and ruthlessness required to claw your way to the top?

Designed for 3–5 players, Mercante is a game of economic warfare. At the beginning of the game, each player controls one warehouse and two agents. On each turn, goods are purchased at auction and stored in the warehouse to be sold at the various markets when the time is right.

Players compete to accumulate crowns to finance their operations, and senatorial favors (victory points) to win the game. The player who accumulates the most money and favors will control all trade and profit in the City-State of Tempest!

Number 2 in the Tempest Shared World Game Series