Added Rules: (in real life property may be 'owned' but that's a figure of speech
1> "Eminent domain" -- Rule, property not owned as part of a set: 4 railroads, 2 utilities, a color group. May be purchased from the "owner" at property value plus mortgaged value (adds up to 1.5* board value) if another player lands on that property and chooses to.

2> "The Hostile Takeover"- Property mortgaged may be purchased at property value, whether part of an owned set or not.

Everything except free parking. Monopoly is about opportunities. Free Parking should allow for Eminent Domain or Hostile Takeover of any available property on the board

Mark