Bandai U-Boat (1982, VFD, 4 C Batteries, Model# 16300)
Manual available
Double sided type game, submarine's vs. destroyers. One player is the destroyer, the other is the submarine, and you try to blow each other up! When playing single player, you can choose if you want to be the destroyer or the sub, and the computer plays the other. Another game with a single VFD display, but it's made in a way that it can be seen from both sides. (Certain areas of each side are blocked out with black tape, so each side does appear to be different.) See the Guts section for a pic of the inside of this game.
Destroyer side and Submarine side:
Japanese box: