BLIP
This is a very old Tomy Blip
Manufactured in 1977 by Tomy
Operated by 2 AA Batteries

This is a mechanical Pong-type game. All of the game play is mechanical, powered by a wind-up timer mechanism. The batteries are only there to light up the single red LED light that represents the ball. (You can actually play the game with no batteries in a bright enough setting).

The game is very simple, reset the score, and serve. The opponent need to guess where the ball is going to land, and need to press the correct number (1,2 or 3) just before the ball arrived.

Got that one on Ebay under $15 

The game play is really fun when playing with another player, against the computer is almost impossible to win , but it provide great training