Fathom is an action-adventure game where Neptina , Neptune's daughter, has been imprisoned at the bottom of the sea by Titans. Your goal is to rescue her by locating the scattered pieces of a magical trident! You will need to take the form of a dolphin and a bird in order to find the hidden pieces.
The gameplay involves exploring the ocean and clouds to find the trident pieces. When flying, you must touch all the clouds to reveal the piece. However, other birds can cause you to lose energy if you accidentally touch them. Underwater, sea horses will help you find the pieces, but octopuses, sharks, and seaweed can drain your energy.