One common criticism of Monopoly is that although it has carefully defined termination conditions, it may take an unlimited amount of time to reach them. Edward P. Parker, a former president of Parker Brothers, is quoted as saying, "We always felt that forty-five minutes was about the right length for a game, but Monopoly could go on for hours. Also, a game was supposed to have a definite end somewhere. In Monopoly you kept going around and around."
Hasbro states that the longest game of Monopoly ever played lasted 1,680 hours (70 days or 10 weeks or 21⁄3 months).