Ward Chilton, International Game Technology's systems division manager, said in a telephone interview from Reno that new machines programmed to increase the chances of winning were installed in the participating Nevada casinos in May 1987. Morro said, players said they would rather have smaller, more frequent jackpots. But after Terry Williams of Los Gatos, Calif., won $4,988,842 at Harrah's in Reno on Feb. Megabucks started in Nevada with what Mr. Bally is a rival slot-machine manufacturer, and Trump has indicated that it would like to try to develop a system of its own linking Trump Plaza, Trump's Castle and the uncompleted Taj Mahal. Morro said that the eight casinos in Atlantic City not owned by the Trump Organization or the Bally Manufacturing Corporation had expressed interest in Megabucks. He said the Nevada system linked 100 casinos and 400 slot machines in 21 cities. Morro, general manager of the Atlantic City Megabucks office, said that Megabucks jackpots averaged $2.4 million in Nevada every 60 to 90 days and that similar figures could be expected in Atlantic City. The machines are manufactured and programmed by International Game Technology of Reno. 14, 1988, and $2.1 million to $2.7 million four other times last year.

In Nevada, first to install the system in 1986, players won $4.9 million on Feb.