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 over.

Sunlight Zone

So bright! So warm! Enjoy collecting stuff as sea life swims by. Catch a current or two!

Twilight Zone

Watch Bioluminescent fish swim by and ride stronger currents downward.

Midnight Zone

It’s quiet. It’s dark. It’s cold. You’ll need your sonar at this depth

Abyssal Zone

The subterranean volcanoes at least give some light to guide your way down.

Hadal Zone

Wake up wake up wake up wake up

Wakeupwakeupwakeupwakeupwak

Chan urrain dhomh cadal