Arm Wrestling is an arcade game about arm wrestling stud-horses, sumo men, Bald Bulls, robots, and legally-not-Frankenstein's monsters.
The player's arm graphic is also different, clad in a blue shirt instead of the teal-colored sleeve seen in the final game.
An early version of the POWER meter. Unlike the final meter, which is part of the top screen's background, this is a separate element that would show up on the bottom screen.
An animation of the match starter lady talking, probably unused because it looks really awkward.