Its brand name, and mid-20th century pinball and slot machine logo, are still used by several businesses with various acquired trademark rights, most notably slot machine maker Bally Technologies and casino operator Bally's Corporation. It was acquired by Hilton Hotels in 1996. Pinball, slot machines, later expanded into casinos, video games, health clubs, and theme parksīally Manufacturing, later renamed Bally Entertainment, was an American company that began as a pinball and slot machine manufacturer, and later expanded into casinos, video games, health clubs, and theme parks. For other uses, see Bally (disambiguation). For the current casino company, see Bally's Corporation. For its successor slot machine company based in Las Vegas, see Bally Technologies. This article is about the former pinball manufacturer based in Chicago.