Which of the following is NOT a Nintendo game console?

The Dreamcast is not a Nintendo game console because it was actually developed and produced by Sega. Released in 1998, it was Sega's last home console before the company shifted its focus to software development. Despite its innovative features and critically acclaimed games, the Dreamcast struggled commercially and was ultimately discontinued in 2001. Thus, it does not fall under the Nintendo brand, making it the correct answer to the question.