Monopoly Deal: This is a card game for 2-6 players ages 8 and up. The box says games take 15 minutes, but I would definitely suggest allocating more time than that until you become familiar with the game. The object of the game is to collect 3 full sets of  properties using money, new "action cards" (anything from "Pass GO - draw 2 more cards" to "Deal Breaker - Steal a full set of properties from any player"), and of course a little Chance. I'm not going to begin to try to explain the rules, otherwise you'd be here all day. You'll just have to go over them yourself if you decide to buy the game. :)
Pros: Much shorter than the original Monopoly; Less clean-up required; Appealing to a wide age range; Easy to travel with.
Cons: Very complicated directions.
If your kids are tired of playing traditional Monopoly and want to learn something new, or if they just don't want to spend hours on one game, this may be a good alternative. I enjoyed playing this game (then again, I won); however, my co-workers who I played with did not seem to enjoy it as much until we played long enough to gain full understanding of all the rules. I would not suggest using this game with an impatient group, and a practice round wouldn't be a bad idea either.
One final note, while I love Amazon Prime, I wouldn't recommend buying from them until their price drops back down to less than $10.