A gaming computer is like a very special toy that you use to play video games on.
It's different from a normal computer because it has really good parts inside that help the video games look and play better.
Imagine your normal computer is like a little toy car that you play with, but the gaming computer is like a big remote control car that can go super fast and do really cool tricks.
Some of the good parts inside the gaming computer include a powerful graphics card that helps create really cool and realistic images on the screen, and a fast processor that can handle all the different things happening in the game without slowing down.
Just like how you need batteries for your toy car to run, a gaming computer needs a lot of electricity to work, so it usually has a big power supply to make sure it has enough energy.
Overall, a gaming computer is like a really fancy and powerful toy for playing video games on, just like how your remote control car is more powerful and exciting than your little toy car.