Bathyscaphe
Released 16 October 2026 · PC · Adventure, Casual, Indie

Dive to the bottom of the Mariana Trench, 11,034 metres down. Short dives, a searchlight against the dark, rare samples, strange creatures and a small yellow bathyscaphe that goes a little deeper after every upgrade. What waits at the bottom? You will find out at the end.
Story
Every dive goes deeper than the last You pilot the research bathyscaphe B-01. The winch lowers you into the ocean, the air lasts a couple of minutes, and the hull only holds so much pressure. Catch samples in your searchlight, scan creatures nobody has seen before and come back up with a full hold. Build the bathyscaphe up, part by part In the shipyard your finds turn into credits, and credits turn into new parts: a stronger hull, more oxygen tanks, a bigger propeller, a longer searchlight, sonar, a manipulator arm and a faster winch. Every upgrade shows up on the 3D model, and every upgrade opens a few hundred more metres of darkness. Five zones, from the reef to the hadal trench Sunbeams fade into blue twilight, then into total darkness where the only light comes from jellyfish, photophores and your own lamp. The light, the colour, the sound and the creatures all change on the way down. Light is your tool The searchlight finds samples, scans new species and scares off predators. Anglerfish and giant isopods punish carelessness, but they are afraid of a bright beam. The sonar pings the dark and shows what hides in it. A field journal worth filling Every creature and sample...
Gameplay
Every dive goes deeper than the last You pilot the research bathyscaphe B-01. The winch lowers you into the ocean, the air lasts a couple of minutes, and the hull only holds so much pressure. Catch samples in your searchlight, scan creatures nobody has seen before and come back up with a full hold. Build the bathyscaphe up, part by part In the shipyard your finds turn into credits, and credits turn into new parts: a stronger hull, more oxygen tanks, a bigger propeller, a longer searchlight, sonar, a manipulator arm and a faster winch. Every upgrade shows up on the 3D model, and every upgrade opens a few hundred more metres of darkness. Five zones, from the reef to the hadal trench Sunbeams fade into blue twilight, then into total darkness where the only light comes from jellyfish, photophores and your own lamp. The light, the colour, the sound and the creatures all change on the way down. Light is your tool The searchlight finds samples, scans new species and scares off predators. Anglerfish and giant isopods punish carelessness, but they are afraid of a bright beam. The sonar pings the dark and shows what hides in it. A field journal worth filling Every creature and sample you find goes into a paper journal as a photo. Unknown entries stay black silhouettes until you meet them. The lab studies the species you have logged and keeps earning credits even while the game is...
Features
- Single-player
- Steam Achievements
- Custom Volume Controls
- #category_playable_at_your_own_pace
- Playable without Timed Input
- Family Sharing






Release details
Bathyscaphe is a Adventure, Casual and Indie game by DARTKIS. It is published by SOZDAY GAMES. Bathyscaphe came out on Friday, 16 October 2026 on PC. This date comes from Steam and was last checked on 16 October 2026.
Frequently asked questions
When did Bathyscaphe come out?
Bathyscaphe came out on 16 October 2026.
Which platforms is Bathyscaphe on?
Bathyscaphe is on PC.
Who makes Bathyscaphe?
Bathyscaphe is developed by DARTKIS and published by SOZDAY GAMES.
What kind of game is Bathyscaphe?
Bathyscaphe is a game of these genres: Adventure, Casual and Indie.