Yeah, there was a Pac game watch. After these two, I had a Q-bert watch that was pretty cool. The problem with the Game Time, the Q-bert, and any with the rubber buttons was the same issue with cordless phones with rubber buttons - the conducting gel underneath wears out and they're not replacable. The Arcade time had a plastic button (and I'm guessing metal contact underneat) which didn't suffer this issue.
Anyways, notice how much these went for?! Kinda neat but I'm sure not in that range of collecting.