I like that idea. It could add new strategy to the game, where you could have to decide what amount of players to add, unless there's separate leaderboards to the amount of AI and difficulties.
Maybe there could just be a specific achievement run. Also on other platforms while there isn't achievements, I don't think that it should be required to actually unlock the achievement, but just do what's required.
Here's a list of the achievements on the xbox 360 version of the game: Bargain Master: Get a property for at least 10% less than its original price (Auction) Business Master: Complete two color sets in one trade Champion: Win a 6-player game (in local multiplayer) Collector Get one property of each color Good Start: Own your first property Great Income: Collect a rent payment of more than M700 Investor: Build your first house Lucky Draw: Get more than M100 thanks to a card Now We Can Play: Build an hotel on each property of at least 2 color sets during the same game Out of Stock: See the bank run out of houses Pole Position: Be the first player to start Precocious: Collect a rent during your first turn The Master: Win a game VIP: Build your first hotel Your Way: Win a game using one "House Rule"
I understand some of these could be difficult, especially with the local multiplayer, where you could just give yourself money in order to win, so there could be a rule against that, or that achievement could be taken out entirely.
I was thinking about a category where you beat the game start to finish without touching a coin. Not sure if this is possible but can we make it happen?