โ All lists
Underwater
Best Underwater and Ocean Games on Steam
The ocean is one of the few settings that can be beautiful and frightening in the same breath. These games send you below the surface to explore reefs, trenches and wrecks, whether that means surviving on an alien world, running a sushi bar from your daily catch, or simply swimming with whales. Their achievement lists tend to reward curiosity: go deeper, scan more, find what is hiding in the dark.
1
2
3
4
5
6
7
8
9
Subnautica
Crash-land on an ocean planet and build your way down into ever darker biomes. The benchmark for underwater survival, with achievements that track how deep and how far you get.
View achievements & guides โ
DAVE THE DIVER
Dive by day, run a sushi restaurant by night. A cheerful mix of exploration, fishing and management with a long, varied achievement list.
View achievements & guides โ
ABZU
A short, wordless swim through a vivid ocean, closer to a moving painting than a game. Its achievements mostly reward finding the hidden corners.
View achievements & guides โ
Subnautica: Below Zero
A colder, more story-led follow-up set in arctic waters. Shorter than the original and a good second dive for fans.
View achievements & guides โ
SOMA
Sci-fi horror at the bottom of the sea, more interested in unsettling questions about identity than in jump scares. A small list that comes mostly from finishing the story.
View achievements & guides โ
Under The Waves
A quiet, melancholy story about a deep-sea diver working alone in the North Sea, with a small submarine to pilot between dives.
View achievements & guides โ
Beyond Blue
Gentle ocean exploration built around marine science, following a research team as they study the creatures they swim beside.
View achievements & guides โ
Barotrauma
Crew a submarine on an alien moon with friends, where wiring, reactors and panic all go wrong at once. Best in co-op, with a sizeable achievement list.
View achievements & guides โ
Diluvion: Resubmerged
Captain a submarine through a drowned world, recruiting a crew and fighting ship-to-ship. A smaller, more adventurous take on the theme.
View achievements & guides โ
Updated 2026-10-07. Every game links to its full SteamVault page with achievement stats, rarity and community completion times.