How to Play
Monopoly Online is a multiplayer board game where you buy, trade, and manage real US companies to bankrupt your opponents.
The Board
The board has 40 fields arranged in a square: 22 properties (real companies grouped by color), 4 railroads (cloud infrastructure), 2 utilities, 4 corner squares (GO, Jail, Free Parking, Go To Jail), and 6 Chance card spaces. Players move clockwise, collecting $2,000k salary each time they pass GO.
Properties & Rent
When you land on an unowned property, you can buy it at its listed price or decline to trigger an auction. Properties are grouped into 8 color groups (2-3 properties each). Owning all properties of a color group (a monopoly) doubles the base rent. Rent increases further when you build houses and hotels on your properties.
Building Houses & Hotels
Once you own all properties in a color group, you can build houses (up to 4) and then a hotel (level 5). You must build evenly across the group — no property can be more than 1 building ahead of another in the same group. Buildings can only be purchased before rolling the dice. Building costs vary by group, from $500k (brown) to $2,000k (dark blue).
Mortgaging Properties
You can mortgage a property to receive half its purchase price from the bank. Mortgaged properties don't collect rent. You must sell all buildings in the color group before mortgaging. To unmortgage, pay the mortgage value plus 10% interest. If you don't unmortgage within 7 rounds, the property goes to a forced auction.
Auctions
When a player declines to buy a property, it goes to auction. All players bid in round-robin order with a minimum increment of $100k. Each player has 20 seconds per bid. If you don't bid in time, you automatically pass. The highest bidder wins the property. If no one bids, the property remains unowned.
Trading
Players can propose trades before rolling the dice. A trade can include money and properties from both sides. Properties with buildings cannot be traded — sell buildings first. Trades must be balanced: one side's total value cannot exceed twice the other's. Each player can make up to 3 trades per turn.
Jail
You go to Jail by landing on the Go To Jail square, drawing a Chance card, or rolling doubles three times in a row. In Jail, you have 3 attempts to roll doubles to escape for free. You can also pay a $500k fine or use a Get Out of Jail Free card. After 3 failed attempts, you must pay the fine.
Dynamic Economy
The game features a dynamic economy that intensifies as the game progresses. Salary payments stop at 46 minutes. A tax system begins at 61 minutes, starting at 50% and increasing by 10% every 5 minutes, capped at 99%. Each player has a 60-second turn timer. Missing 3 consecutive turns due to timeout results in automatic bankruptcy.
Winning the Game
The last player standing wins! A player goes bankrupt when they owe more than their total assets (cash + property values + building values). When bankrupt due to rent, properties transfer to the creditor. When bankrupt due to taxes or bank payments, properties go to auction. Players can also surrender voluntarily.