The Bottom of the Sea is an underwater video game in which you, as a diver, have the goal of getting to the bottom of the sea by jumping down from sea ledge to sea ledge.
Playing instructions: “Get on your suit and explore the mysterious sea.”
What’s interesting to me about this one is that, unlike many underwater video games, you are heavier than the water and sink pretty quickly. The danger (as in games in the sky) is falling to your death. But instead of climbing upward, you’re pulled down to explore the depths.