The Neo Geo (Japanese: ネオジオ, Hepburn: Neojio), stylized as NEO•GEO and also written as NEOGEO, is a ROM cartridge-based arcade system board and fourth generation home video game console released on April 26, 1990, by Japanese game company SNK Corporation. It was the first system in SNK’s Neo Geo family.The Neo Geo originally launched as the Multi Video System (MVS) coin-operated arcade machine. With its games stored on self-contained cartridges, a game cabinet can easily be changed to a different game title by swapping the game’s cartridge and cabinet artwork. The MVS offers owners the ability to put up to six different cartridges into a single cabinet, a unique feature that was a key economic consideration for operators with limited floorspace, as well as saving money long term.

The Neo Geo CD (Japanese: ネオジオCD, Hepburn: Neo Jio Shī Dī) is the second home video game console of SNK Corporation’s Neo Geo family, released on September 9, 1994, four years after its cartridge-based equivalent. This is the same platform, converted to the cheaper CD format retailing at $49 to 79 per title, compared to the $300 cartridges.[1] The system was originally priced at US$399 or £399. The system can also play Audio CDs. All three versions of the system have no region-lock. The Neo Geo CD was launched bundled with a control pad instead of a joystick like the AES version. However, the original AES joystick can be used with all three Neo Geo CD models.