Hollowdeep

Hollowdeep is a cozy underwater survival game set on the ocean planet 626A. You are a Caretaker living alone in a bubble of air on the seafloor, tending gardens and glowfish while feeding the living Core that keeps the water out. To make your bubble grow you must dive into the open ocean on limited air, gathering treasure from depths that grow darker and more dangerous the further down you go. Along the way you uncover logs revealing the truth about Halcyon Deepworks, the company that left you here, and why no Caretaker has ever returned to the surface.