I never knew there were so many versions of Monopoly in card game format!
Recently, I picked up the newest version called "Monopoly Deal" - it's a fun game that my wife and I use to kill some time.
It reminded me of a card game version of Monopoly I played when I was little called Express Monopoly (Not to be confused with Monopoly Express which is a newer version of the old Dice Game "Don't Go to Jail"). While looking for it, I discovered there's also Monopoly: The Card Game (apparently something close to Rummy) and Free Parking (a game similar to Mills Borne). Then, there's "WaterWorks", a game that existed for awhile and was sold under the Monopoly brand for a short while even though it really had nothing to do with Monopoly.
Anywhoo, I've managed to gather three of the five games and have something in the works for the other two. I'll be able to have an entire Monopoly Card Game themed night! Whoo!