The battery is the same and will work on both the new and old models

In order to remove the back cover, slide it down towards you and then pry the cover off.

Sometimes you do need to replace the reflector, as those tend to go bad over time. I’ve had to replace a reflector on my Snoopy Tennis Game & Watch, as it had a big blotch in the middle. Pretty easy, but a little tricky, as you’ll need to slide the old reflector out and slide a new one in.

The first Multi Screen Game & Watch was Oil Panic. Donkey Kong was the second Multi-Screen Game & Watch, and the most successful, with 8 million sold. It’s also one of the most sought after.