N-Gage was a little phone that you could use to play games. It was made by a company called Nokia. It was pretty neat because it was like having a phone and a game console all in one. It had a little screen you could look at, and some buttons that you could press to make your game character do things.
N-Gage was also pretty special because it let you play games with other people who had N-Gage phones. You could connect to them through the internet and play games together. It was kind of like playing a board game, but with your phone instead.
Unfortunately, not a lot of people bought N-Gage phones, so they kind of disappeared after a while. But they were still a pretty cool idea!