Cocktail arcade cabinets have been around for decades, but they are usually for 1 or 2 players. I believe there are enough games to enable a 4-player tabletop version.
This gadget is made possible by an IPS display, a superior display that can be seen clearly from all angles. I also want to include rotary joysticks, which can be toggled like a joystick for regular games (Pac-Man), or rotated for spinner games (Pong). The rotary joystick can be a button as well.