Echo in the Lightless Deep
Released 15 October 2026 · PC · Action, Indie, RPG
Echo in the Lightless Deep is a deep-sea survivor roguelite. Symbionts fight for you; you steer, dodge and build. The brighter your core, the farther you see and strike, and the more the deep sends at you. Five giants guard the way down. At the bottom, choose: return to the light, or stay dark.
Story
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. Combat runs itself. Symbionts orbit the core and tear into whatever comes close, and rare ones you cross in the dark — a lantern jellyfish, a blind cleaner shrimp — will join you if you drift near, each with its own job: lighting the way, soaking hits, straining motes from the water. They have loyalty meters; run them down and they leave for a while. What you actually do is steer, dodge, and time three skills: Lights-Out: dim to near-black. Far fewer monsters appear, your damage halves, dark energy builds faster, and the first hit on anything that hasn't spotted you deals 2.5× damage. Also the best way to...
Gameplay
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. Combat runs itself. Symbionts orbit the core and tear into whatever comes close, and rare ones you cross in the dark — a lantern jellyfish, a blind cleaner shrimp — will join you if you drift near, each with its own job: lighting the way, soaking hits, straining motes from the water. They have loyalty meters; run them down and they leave for a while. What you actually do is steer, dodge, and time three skills: Lights-Out: dim to near-black. Far fewer monsters appear, your damage halves, dark energy builds faster, and the first hit on anything that hasn't spotted you deals 2.5× damage. Also the best way to shake a tail. Echo Pulse: spend 40% of your dark energy to send out a sonar ring. Everything it touches is marked for 4 seconds and takes triple damage. Light Devourer: needs a full bar of dark...
Features
- Single-player
- Steam Achievements
- Full controller support
- Save Anytime
- Steam Cloud
- Stats
- Steam Leaderboards
- Family Sharing
Release details
Echo in the Lightless Deep is a Action, Indie and RPG game by CelestialArk. Echo in the Lightless Deep came out on Thursday, 15 October 2026 on PC. This date comes from Steam and was last checked on 15 October 2026.
Frequently asked questions
When did Echo in the Lightless Deep come out?
Echo in the Lightless Deep came out on 15 October 2026.
Which platforms is Echo in the Lightless Deep on?
Echo in the Lightless Deep is on PC.
Who makes Echo in the Lightless Deep?
Echo in the Lightless Deep is developed by CelestialArk.
What kind of game is Echo in the Lightless Deep?
Echo in the Lightless Deep is a game of these genres: Action, Indie and RPG.