I think that when ps1 entered the market, the videogame started to change, to become more adult.
After 12 years in which the game industry moved towards the range of 20-40 years old (thanks to ps1, ps2, dreamcast and xbox), ninntendo company has created a console for all those gamers (children, women, casual gamers) that did not feel reflected in that previous market. And maybe this is one reason of its succcess.







