How to Play
Monopoly Online is a multiplayer board game where you buy, trade, and manage real global brands to bankrupt your opponents.
The Board
The board has 40 fields arranged in a square: 22 properties (real global brands grouped into 8 color groups), 4 Finance properties, 2 Industry properties, 4 corner squares (GO, Jail, Casino, Go To Jail), 6 Chance card spaces, and 2 tax squares ($2,000k Luxury Tax and $1,000k Income Tax). Each player starts with $15,000k. Players move clockwise, collecting a $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 grows further as you open branches and corporations. Landing exactly on GO pays an extra $1,000k bonus on top of the $2,000k salary.
Building Branches & Corporations
Once you own all properties in a color group, you can open branches (up to 4) and then upgrade to a Corporation (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 (Supermarkets) to $2,000k (Technology).
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
You can propose trades during your own turn — before rolling, while deciding whether to buy a property, while a rent or tax payment is pending, or during debt resolution. A trade can include money and properties from both sides. Properties with buildings cannot be traded — sell the buildings first. Any color group with a corporation on any of its properties is fully locked from trading (demolish the corporation first). Trades must be balanced: the value difference cannot exceed 50% of the larger side, and one side cannot exceed twice the other. Up to 3 trades per turn.
Chance Cards
The board has 6 Chance squares. Landing on one draws a card from a shuffled deck of 20. The deck reshuffles automatically when empty. Card effects include: collect from or pay the bank, collect from or pay every player, advance to GO / Jail / a specific property, move to the nearest Finance or Industry property, go back 3 spaces, building repairs (a fee per branch and corporation you own), and Get Out of Jail Free. If a payment card costs more than your cash, the game sends you into debt resolution.
Casino
Landing on the Casino square (corner field 20) — or being sent there by a Chance card — opens a betting mini-game. Pick 1 to 3 numbers from 1-6 and place a $1,000k bet. One die is rolled: if it matches any of your picks you win $1,000k × (6 ÷ K) where K is how many numbers you chose — 1 number pays 6×, 2 pays 3×, 3 pays 2×. Independently of the dice result there is a 1-in-20 chance to win the entire jackpot pool. Every placed bet adds $500k to that pool (funded by the bank, not from your bet). You can also decline to bet and pass the 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 and escape for free. You can also pay a $500k fine voluntarily or use a Get Out of Jail Free card. On the third failed attempt the $500k fine becomes mandatory.
Debt Resolution
When you cannot afford a mandatory payment — rent, tax, a Chance card cost, or a won auction — you enter Debt Resolution with a 60-second timer. The panel shows the amount owed and your assets: sell buildings or mortgage properties to raise the cash, or propose a trade with another player. If you can't (or won't) cover the debt you can surrender voluntarily. Rent-debt bankruptcy transfers the remaining properties to the creditor; tax or bank-debt bankruptcy sends them to auction.
Dynamic Economy
The economy 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%) — applied to rent collection. Each turn has a 75-second timer (60s of thinking budget plus 15s of animation grace). Missing 3 consecutive turns by timeout triggers automatic bankruptcy. Any active player can request a pause; the game pauses only on unanimous consent and any player can resume it.
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.