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."[46]

Hasbro states that the longest game of Monopoly ever played lasted 1,680 hours (70 days or 10 weeks or 21⁄3 months).[47]

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