So you know how sometimes you like to play games on your phone or tablet? Well, imagine if there was a device that was just for playing games, it's called a handheld game console.
It's like having a little TV in your hands with buttons and a screen that you can use to play games. Unlike your phone or tablet that has lots of other things you can do, the handheld game console is only for playing games.
You can even take it with you on trips or to a friend's house because it's small and easy to carry around. There are lots of different ones you can choose from like the Nintendo Switch, Nintendo 3DS, or PlayStation Vita.
You can buy games for the handheld game console or even download them online. Some of the games are special just for the handheld game console, which means you can only play them on that device and they might not be on your phone or tablet.
In summary, a handheld game console is like a special device just for playing games and you can take it with you anywhere you go.