Nintendo is doing alright. Here are the sale stats:
Sony PlayStation 2 (Released 2000): 103.69 million
Sony PlayStation (Released 1995): 102.49 million
Nintendo Game Boy Advance (Released 2001): 76.79 million
Nintendo Game Boy (Released 1989): 69.42 million
Nintendo Entertainment System (Released 1985): 60 million
Nintendo Game Boy Color (Released 1998): 49.54 million
Super Nintendo Entertainment System (Released 1991): 49 million
Nintendo 64 (Released 1996): 32.93 million
Nintendo DS (Released 2004): 26.82 million
Microsoft Xbox (Released 2001): 24 million
Nintendo GameCube (Released 2001): 21.20 million
Sony PlayStation Portable (Released 2005): 17.03 million
Microsoft Xbox 360 (Released 2005): 7.1 million
Nintendo Wii (Released 2006): 1.2 million
Sony Playstation 3 (Released 2006): 389,951