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Game entries modified in the past three weeks
 Game Title | Year | Changes to Game | Change Date |
| Mario Bros. | 1983 | New covers. | May 22, 2013 |
| Mario Kart 7 | 2011 | New covers. | May 16, 2013 |
| Mario Kart: Double Dash!! (Special Edition) | 2003 | New screenshots. | May 23, 2013 |
| Mario Kart Wii | 2008 | New covers and product codes. | May 12, 2013 |
| Mario Party 9 | 2012 | New screenshots. | May 17, 2013 |
| Mario Power Tennis | 2004 | New screenshots. | May 23, 2013 |
| Mario & Sonic at the Olympic Games | 2007 | New screenshots. | May 17, 2013 |
| Mario & Sonic at the Olympic Winter Games | 2009 | New screenshots. | May 15, 2013 |
| Mario & Sonic at the Olympic Winter Games | 2009 | New screenshots. | May 17, 2013 |
| Mario Sports Mix | 2010 | New credits. | May 09, 2013 |
| Mario Super Sluggers | 2008 | New screenshots. | May 17, 2013 |
| Mario Superstar Baseball | 2005 | New screenshots. | May 23, 2013 |
| Mario vs. Donkey Kong 2: March of the Minis | 2006 | New screenshots. | Yesterday, 08:14 AM |
| Mario vs. Donkey Kong: Mini-Land Mayhem! | 2010 | New screenshots. | May 15, 2013 |
| Mars Rising | 1998 | New credits. | Yesterday, 07:44 AM |
| Mass Effect 3 | 2012 | New screenshots and covers. | May 19, 2013 |
| Mass Effect 3: Reckoning Multiplayer Expansion | 2013 | New screenshots. | May 19, 2013 |
| The Matrix: Path of Neo | 2005 | New screenshots. | May 08, 2013 |
| Maze Wars+ | 1986 | New credits. | Yesterday, 07:39 AM |
| Mean 18 | 1986 | New credits. | Yesterday, 07:37 AM |
| Medal of Honor: Allied Assault | 2002 | New screenshots. | May 10, 2013 |
| Medal of Honor: Allied Assault - War Chest | 2004 | New covers. | May 16, 2013 |
| Medieval: Total War - Battle Collection | 2004 | New covers. | May 23, 2013 |
| MediEvil II | 2000 | New covers. | May 07, 2013 |
| Metal Army | 1988 | New screenshots. | May 15, 2013 |
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