Black Box is a vintage (1978) game put out by Parker Brothers. You can still find it on eBay but I can't find anybody selling newer versions of the game. It's similar in gameplay to Mastermind where one person sets up a hidden puzzle and the other person tries moves and is given a response from the system. The second person, in this case, needs to figure out the position of 4-5 balls in a 2-dimensional grid where (imaginary) laser beams are sent into the black box and come out in different locations (or not) based on where the balls are inside.

As a youngster, I enjoyed both setting up the puzzles and solving them. My son was introduced to the game when his grandparents discovered a copy in their home and seemed to be mildly interested in playing it.