Here's a set of variant "home rules" for Monopoly that spice up play, making it more competitive or cooperative, depending on which rules you adopt.
Partnerships
Rule: Two or more players may agree to form a partnership with a property group in which they have a monopoly between them. Each partner may then purchase houses or hotels for the property they own as long as they follow rules for building evenly. A player may leave the partnership between dice rolls, forcing all players in the partnership to sell all of their buildings.
Example: Peter owns Boardwalk and Sarah owns Park Place. They agree to form a dark blues partnership and Peter builds a house on Boardwalk. Sarah later builds two houses on Park Place so Peter builds another two houses on Boardwalk. Players who land on Park Place are forced to pay $500 to Sarah and players who land on Boardwalk must pay $1400 rent to Peter. Sarah later lands on Board Walk and pays Peter $1400 in rent. In disgust she dissolves the partnership and sells her two houses on Park Place for $200. Peter must sell his three houses for $300.
Reason: Gives more options to players.
Six Railroads
(via Plasticbag)
