Released on 9th September, 1994 by SNK Corporation, the Neo Geo CD is essentially the same version of the original cartridge-based system, which was released in 1990, but instead of using cartridge, it uses CD, which in turn was cheaper, with games retailing between $49 to $79 per title as opposed to the previous cost of cartridge-based games which sold for around $300.
The final version of The Neo Geo CD was the CDZ version, which was released exclusively for Japan.