When I was a kid we had this game system that was silver in color and played pong, some game where each player had 2 paddles and tried to hit the ball into a "goal" (which was a hole in the wall behind your paddles) and some target shooting game (some white square moved around the screen and you shot at it with a lightgun). What I remember most about the system was that the paddle controls weren't knobs you spin but rather sliders that you could unplug from the console and use handheld.
Was just wondering what the heck that way old system was...