These are kind of neat (but not as vintage). These little LCD games came in kit form, you have to assemble the entire game (it even comes with the screwdriver). You can see the circuit board by itself (came in the white box), the large bag has the screws, controls, LCD panel and a few other parts.

(If you have one of these sealed, open it carefully and remove the battery that comes included with it, it will corrode and damage everything.)