The Nintendo 64 is a home video game console developed and released by Nintendo, launched in Japan on June 23, 1996, and in North America that September. Named for its 64-bit processor, it succeeded the Super Nintendo and competed against the Sega Saturn and Sony PlayStation in the fifth console generation. Its graphics hardware, the Reality Coprocessor, was developed with Silicon Graphics (SGI), the workstation company whose 3D technology Nintendo adopted after the underlying chip design had been shopped to other console makers first. Nintendo controversially stuck with cartridges rather than the CD-ROM format its rivals embraced, a choice that delivered fast load times and reduced piracy but limited storage and pushed some third parties, including Square, toward the PlayStation. The N64 introduced design ideas that became industry standards: an analog control stick built for 3D movement, the Rumble Pak for force feedback, and four built-in controller ports that made it the defining console for local multiplayer. Its library, though smaller than its rivals', included landmark titles such as Super Mario 64, The Legend of Zelda: Ocarina of Time, and GoldenEye 007. The console remains a touchstone of the 3D transition and a key front in the Nintendo versus Sega rivalry of the 1990s.