Pac-Man © 1982 Nelsonic.
This unit was released with several different faceplate graphics and at least 2 different styles of physical layout - one with 4 directional buttons and the other with a small joystick that could be assembled.
Licensed by Midway to Nelsonic for publishing. This game retailed for between $25 and $35 and quickly became one of the most popular Nelsonic Game Watches, selling over 500,000 units.