One diver per screen. Crew the living submarine Nautika together online — someone steers, someone shields, someone shoots — or dive solo with an AI crew. Free the caged sea critters, escape the trench.
Dive Setup
Pick your diver:
AI Crewmates
They crew empty stations for you — more AI = easier dives.
Arsenal
Choose Trench Level
⚓ Shipyard
Spend salvage points earned in the trenches. Upgrades are permanent. Balance: 0
Options
Music volume
Sound FX volume
Click a key to rebind, then press the new key. (Esc cancels)
Room Open
Friends on any device (iPad / phone / PC) open this same game page, tap Join Online Game, and enter:
————
Your diver:
AI Crewmates (fill empty seats)
Choose Trench Level
Join a Crew
Pick your diver, then enter the 4-letter room code from the host's screen.
You're in the crew!
Waiting for the host to start the dive…
Title
sub
How to Play
The Nautika needs a crew. Your diver runs around inside the sub. Swim up to a glowing station and dock into it. No station runs itself!
Stations:Helm — steer/thrust the whole sub. Shield — aim a bubble barrier at danger. Torpedoes ×2 — aim with your move keys, hold Space to fire. Deep Charge — charges while manned; tap Space to unleash the blast. Sonar — while manned, everyone sees the sonar scope.
Controls: Arrow keys move & aim · Space dock / fire · X leave station. All rebindable under Controls. Touch screens get a joystick + buttons.
Goal: Free at least 5 caged critters (swim the sub into their pods) to open the exit whirlpool. Boss trenches: defeat the boss instead.
Scoring: Everything scores — kills, rescues, crates. Chain them fast to build a combo multiplier up to x5. Big scores permanently unlock mega-weapons (Octo-Barrage, Eel-Storm Arc, Mantis Railgun, Feeding Frenzy) — beating each zone boss unlocks one too.
Weapon levels: Blighted husks drop glowing Current Tokens. They pull toward the sub — collect them to level every weapon up to LV5 for the rest of the run.
Shards: Shoot crates and touch the shard to socket it (Surge=faster, Plate=heavier, Flow=piercing, Swarm=spread). Free 5 critters for a 2nd slot per station.
AI crew: Choose 0–3 AI crewmates before diving — they man shield, helm and turrets on their own. More AI = easier.
Online: one player hosts, friends join with the room code — each device is one diver. Phones/iPads need the page served from a website (https), not a local file.
Shipyard: Every point you score also banks as salvage (⬡). Spend it in the Shipyard on permanent hull, engine, shield and weapon upgrades.
P pause M mute H toggle control legend · music & SFX volume in Options