Challenger's Sleep is an underwater collectathon that pulls you down from the bright Sunlight Zone and into the Sohm Abyssal Plain - and then deeper still. Can you take on the challenge and discover what lays at the bottom, or will the mystery stay sleeping below the waves?Move left or right to avoid hazards. Use your sonar to collect treasures and find hidden hazards as you descend. Get to the end of the level with at least one life left. Lose all three and it’s game