Nintendo DS

Nintendo DS sold 154 million units, trailing the PlayStation 2 by just 1 million, making it the second best-selling console ever. Its dual-screen design with a touchscreen and microphone, introduced at a launch price of $149.99, created unique gameplay in titles like Brain Age and Nintendogs, expanding the market to seniors and young children. Over 1.8 billion games were sold for the system, with New Super Mario Bros. alone moving 30 million copies, proving that innovative hardware could rival rivals' pure sales power.