Albatross

After an unnamed catastrophe, you've been left alone and stranded on a boat in the middle of a sunken world. Journey through vast megastructures and the giant rotting frames of mysterious machines. Feed the boat's engine with fish caught using your harpoon. Never slow down.

You are stranded and alone on a boat in the middle of a sunken world, fighting to escape the jaws of a god-like leviathan. You must keep the boat moving fast, by feeding fish you catch with your harpoon to the boat's bio-engine. If its power gets too low, the leviathan will start getting closer.