linguistic:voice_change, quality:correction, structural:summarization
US versions

There have since been some changes to the board. Not all of the Chance and Community Chest cards as shown in the 1935 patent were used in editions from 1936/1937 onwards. Graphics with the Mr. Monopoly character (then known as " Rich Uncle Pennybags ") were added in that same time-frame. A graphic of a chest containing coins was added to the Community Chest spaces, as were the flat purchase prices of the properties. Traditionally, the Community Chest cards were yellow (although they were sometimes printed on blue stock) with no decoration or text on the back; the Chance cards were orange with no text or decoration on the back.

Hasbro commissioned a major graphic redesign to the U.S. Standard Edition of the game in 2008 along with some minor revisions. Among the changes: the colors of Mediterranean and Baltic Avenues changed from purple to brown, and the colors of the GO square changed from red to black. The Luxury Tax amount increased from $75 to $100, and a flat $200 Income Tax was imposed (formerly the player's choice of $200 or 10% of their total holdings, which they could not calculate until after making their final decision). Originally the amount was $300 but was changed a year after the game's debut. There were also changes to the Chance and Community Chest cards; for example, the "poor tax", "receive for services", "Xmas fund matures", and "grand opera opening" cards became "speeding fine", "receive $25 consultancy fee", "holiday fund matures", and "it is your birthday", respectively; though their effects remained the same; the player must pay only $50 instead of $150 for the school tax. In addition, a player now gets $50 instead of $45 for sale of stock, and the Advance to Illinois Avenue card now has the added text indicating a player collects $200 if they pass Go on the way there.

All the Chance and Community Chest cards received a graphic upgrade in 2008 as part of the graphic refresh of the game. Mr. Monopoly's classic line illustration was also now usually replaced by renderings of a 3D Mr. Monopoly model. The backs of the cards have their respective symbols, with Community Chest cards in blue and Chance cards in orange.

Additionally, recent versions of Monopoly replace the dollar sign ($) with an M with two horizontal strokes through it.

In the US versions shown below, the properties are named after locations in (or near) Atlantic City, New Jersey. Atlantic City's Illinois Avenue was renamed Martin Luther King Jr. Boulevard in the 1980s. St. Charles Place no longer exists, as the Showboat Atlantic City was developed where it once ran. The values on the board reflect real estate property values of 1930s Atlantic City. The two cheapest properties, Baltic Avenue and Mediterranean Avenue, were situated in a low-income, African-American neighborhood; higher-value properties, such as Pennsylvania Avenue, Park Place, and Ventnor Avenue, were situated in wealthier neighborhoods.

Different versions have been created based on various current consumer interests such as: Dog-opoly, Cat-opoly, Bug-opoly, and TV/movie games among others.

Marvin Gardens, the farthest yellow property, is a misspelling of its actual name, Marven Gardens. The misspelling was introduced by Charles and Olive Todd, who taught the game to Charles Darrow. It was passed on when their homemade Monopoly board was copied by Darrow and then by Parker Brothers. The Todds also changed the Atlantic City Quakers' Arctic Avenue to Mediterranean, and shortened the Shore Fast Line to the Short Line. It was not until 1995 that Parker Brothers acknowledged the misspelling of Marvin Gardens, formally apologizing to the residents of Marven Gardens.

Short Line refers to the Shore Fast Line, a streetcar line that served Atlantic City. The B&O Railroad did not serve Atlantic City. A booklet included with the reprinted 1935 edition states that the four railroads that served Atlantic City in the mid-1930s were the Jersey Central, the Seashore Lines, the Reading Railroad (now part of Norfolk Southern & CSX), and the Pennsylvania Railroad.

The Baltimore & Ohio (now part of CSX) was the parent of the Reading. There is a tunnel in Philadelphia where track to the south was B. & O. and track to the north is Reading. The Central of N.J. did not have a track to Atlantic City but was the daughter of the Reading (and granddaughter of the B. & O.) Their track ran from the New York City area to Delaware Bay and some trains ran on the Reading-controlled track to Atlantic City.

The actual "Electric Company" and "Water Works" serving the city are respectively Atlantic City Electric Company (a subsidiary of Exelon) and the Atlantic City Municipal Utilities Authority.