Portal:Video games/Selected anniversaries/September

• September 1983: The media reported on the dumping of thousands of Atari game cartridges.
• September 1993: Alan Emrich coined the term "4X" in his preview of Master of Orion in Computer Gaming World
• September 2002: Microsoft acquires Rare as a first-party developer.
• 1980-09-02: California Pacific Computer Co. released Ultima I: The First Age of Darkness, the first game in the Ultima series created by Richard Garriott.
• 1985-09-13: Nintendo released Super Mario Bros. for the Nintendo Entertainment System.
• 2005-09-29: Namco merged with Japanese toymaker Bandai to form Namco Bandai Holdings.