Okay kiddo, do you like playing video games? Unity is something that helps make those games! It's like a big toolbox that game developers can use to make all sorts of fun games.
So imagine you have lots of toys, like building blocks, action figures, and puzzles. Unity is like a toy box full of lots of tools, like special blocks for making buildings, dolls with different costumes, and tricky puzzles that you can put together however you want.
When game developers use Unity, they can use these tools to create their own unique games. They can make games with pretty graphics, exciting sounds, and cool characters that move and interact with each other just like in real life.
And, the really cool thing is that Unity works on lots of different devices like phones, tablets, and even virtual reality headsets! So you can play games made with Unity almost anywhere you go.