Cybertown is like a make-believe town in the computer that you can visit and play around in. You can make your own little house there, decorate it with fun things, and even chat with other people who are in Cybertown too. It's kind of like playing a game, but also a bit like playing with dolls or toy cars, except it's all in the computer. You can do all sorts of things in Cybertown, like hang out with friends, play games, or even learn new things. Think of it like a really fun playground on the computer!