"Oh! Okay, I hadn't realised you knew about television, bit easier to explain then. And yes, sort of. The first ones were only black and white, well black on green, and all you use the controls to move things around the screen. Hang on," he said, giving in and pulling out his sketch book and pencil. He did a quick line drawing of a basic Game Boy and blocked in a quick game of tetris on the 'screen'. "Here," he said, showing Lavender. "You use these buttons to control the shapes from side to side. Some of the other games you could use them to make characters jump. Sort of really basic interactive games."
He scratched at his eyebrow, hoping like crazy he was making sense.