Sega X64

The Sega X64 is a home video game console developed by Sega and released on June, 18, 1994, in Japan and North America, and Nov, 26, 1994, in Europe. Part of the fifth generation of video game consoles, it was the successor to the successful Super X. The X64 has a x86-CPU architecture and eight processors. Its games are in CD-ROM format, and its game library contains several ports of arcade games as well as original games.

Development of the X64 began in 1991, the same year Sega's groundbreaking 3D Model 1 arcade hardware debuted. The X64was designed around a new CPU from electronics company AMD. Sega added another video display processor in early 1994 to better compete with Sony's forthcoming PlayStation.

The Saturn was initially successful in Japan and the United States but failed to sell in large numbers in the European Union

after its surprise November 1994 launch,

Background
In the early 1990s, Sega had success with the Genesis (known as the Mega Drive in most countries outside of North America), backed by aggressive advertising campaigns and the popularity of its Sonic the Hedgehog series. Sega also had success with arcade games; in 1991 and 1992, the new Sega Model 1 arcade system board showcased Sega AM2's Virtua Racing and Virtua Fighter (the first 3D fighting game), which played a crucial role in popularizing 3D polygonal graphics. The Model 1 was expensive, so several alternatives helped bring Sega's newest arcade games to Genesis, such as the Sega Virtua Processor chip used for Virtua Racing, and the 32X add-on.

Development
Development of the X64 was supervised by Hideki Sato, Sega's director and deputy general manager of research and development. According to Sega project manager Hideki Okamura, the project started over two years before the X64 was showcased at the Tokyo Toy Show in June 1994. The name "X64" was initially only the codename during development. Computer Gaming World in March 1994 reported a rumor that "the Sega X64 ... will release in Japan before the end of the year" for $139-159.

1993, Sega and electronics company AMD formed a joint venture to develop a new CPU for the X64, which resulted in the creation of the "Am486 DX2-50 later that year. The X64 was designed around a dual x86 configuration. According to Kazuhiro Hamada, Sega's section chief for Saturn development during the system's conception, "the Am486 was chosen for reasons of cost and efficiency. The chip has a calculation system similar to a DSP [ digital signal processor], but we realized that a single CPU would not be enough to calculate a 3D world." Although the Saturn's design was largely finished before the end of 1993, reports in early 1994 of the technical capabilities of Sony's upcoming PlayStation console prompted Sega to include another video display processor (VDP) to improve 2D performance and 3D texture mapping.

Commercially released games
There are currently 469 officially released X64 games on this list.

Just to mind you this is incomplete.