Tides of Tethys Gets Updated Demo Ahead of Subnautica 2
Tides of Tethys got a freshly updated demo in 2026, just as subnautica 2’s early access launch approaches. Black Rust’s underwater strategy roguelite folds in city-building, and the timing makes it a natural detour for players looking for something in the same ocean-space.
Black Rust and 4546b
The game sends players across procedurally generated ocean floors with troupes of bathynauts, while the Knights need oxygen, power, and food to keep moving. That mix pushes it beyond a standard survival setup: units gather resources on their own and head back to oxygen tethers when they start running low.
The demo also leans hard into mood. Its interface uses curly gold fonts, the scenery is packed with enormous curls of coral, and the fog of war looks like a mountainous oil spill. The knights themselves resemble Bioshock’s Big Daddies and Sisters, which gives the whole thing a deliberate retro-future look instead of a generic underwater sheen.
Crustaceans and Big Daddies
One of the sharper demo changes lets players turn crustaceans into valiant steeds, a strange but useful detail that fits the game’s offbeat tone. The comparison set around it is just as specific: the piece places Tides of Tethys alongside Bioshock, Warhammer 40,000, and Jules Verne rather than treating it like a broad-subgenre duplicate.
For anyone who does not click with that blend, Life Below is mentioned as the cleaner city-builder option, with coral reefs as its inspiration. That gives players waiting for subnautica 2 two different paths: Black Rust’s more tactical, roguelite-heavy demo, or a more conventional builder built around the same watery setting.
Life Below
The practical takeaway is simple: if subnautica 2 has you looking for an underwater fix before early access lands, Tides of Tethys now has a refreshed demo to try. It is the rarer kind of genre cousin that does not just borrow the setting — it builds a whole ruleset around oxygen, resource gathering, and procedural maps.
