 Early commercial systems such as Plato were at least as widely famous for their games as for their strictly educational value.In 1958, "Tennis for Two" dominated Visitor's Day and drew attention to the oscilloscope at the Brookhaven National Laboratory; during the 1980s, Xerox PARC was known mainly for "Maze War", which was offered as a hands-on demo to visitors.Modern online games are played using an Internet connection; some have dedicated client programs, while others require only a web browser.