The Sony Playstation 2 is the most played game console in the US, according to a study of trends among Americans by Nielsen in its news release whitepaper (PDF). The Nielsen study gave out results in the form of top-10 rankings for several products and the consumers' usage patterns. Nielsen calculated the usage minutes of all consoles found in the home as a percentage. The Playstation 2 ranked top with a usage percentage of 31.7%, trailed by Microsoft Xbox 360 at 17.2%, Nintendo Wii at 13.4%, Microsoft Xbox at 9.7% and Sony Playstation 3 at 7.3%.

Please note that these figures are those of the usage minutes of these consoles and aren't exactly indicative of their market shares. Also taken into account should be the fact that the Playstation 2 is a much older console launched in 1999 while its competitive 6th generation console, the Xbox was launched two years later in 2001. The data was measured from January to October 2008. According to Nielsen "other" includes "any other console found in the home" and it appears portable hardware like the Nintendo DS or the Sony PSP were not included in the research. In related news, the same study suggests the most played PC game title. No guesses here: Blizzard's World of Warcraft. Refer to the whitepaper for more details.