This is Engage, a battery-free Game Boy lookalike that can play all the classics from Super Mario to Tetris to Space Invaders. While the device looks like a Game Boy and plays like one, it’s really something revolutionary. The Engage device harvests energy from these solar panels and these mechanical buttons. So the buttons have these magnets that are pushed through coils. They change the magnetic field and we harvest that change. The frequency of your button mashing will determine how much energy you actually have. Then the solar panels are also gathering energy and eventually it all flows into this processor which lets us actually play Game Boy games.