From Sega Retro
Sammy Corporation (サミー) or Sammy Kougyou (サミー工業) was established on November 1, 1975 and is a leading developer and retailer of pachinko and pachislot systems in Japan.
In 2001, Sammy Corporation created subsidiary Sammy Entertainment, Inc. Sammy Entertainment would later change its name to Sammy Studios in 2002. Sammy Studios is responsible for developing and publishing next-generation video games. They are perhaps best known for publishing the Guilty Gear series of fighting games developed by Arc System Works.
Sammy merged with Sega in 2004, creating the holding company Sega Sammy Holdings. It now mostly targets the pachinko and pachislot makets in Japan, with Sega taking on its video game development studios.
Kaneko Hardware (arcade)