Echo in the Lightless Deep

Echo in the Lightless Deep is a deep-sea survivor roguelite. You guide a small light core down from the surface, through five zones of a sunless ocean, to the seafloor 1,050 meters below. Down here, your glow is one of the only lights there is.

Brightness is the heart of the game. It sets how far you can see, how far your symbionts can strike, and how far away a monster notices you. Collect motes and pick light-side mutations and the light grows, and so does everything that comes to meet it. Go dim and you're safer. Where to hold that trade is what every dive is made of.