Hudson Soft Co., Ltd. was a Japanese video game company known for releasing numerous titles across video game consoles, home computers, and mobile phones. Headquartered in the Midtown Tower in Tokyo, it also maintained an office in the Hudson Building in Sapporo. Founded on May 18, 1973, Hudson initially focused on personal computer products before expanding into video game development, publishing, peripherals, and music production. Hudson Soft became a publicly traded company in 2000. In 2005, Konami acquired a 55% controlling stake in Hudson, later purchasing the company outright on April 1, 2011. On March 1, 2012, Hudson merged with Konami Digital Entertainment, which retains its game catalog and periodically re-releases Hudson's classic titles.